New American Standard Bible (©1995)
The side chambers surrounding the temple were wider at each successive story. Because the structure surrounding the temple went upward by stages on all sides of the temple, therefore the width of the temple increased as it went higher; and thus one went up from the lowest story to the highest by way of the second story.
King James Bible
And there was an enlarging, and a winding about still upward to the side chambers: for the winding about of the house went still upward round about the house: therefore the breadth of the house was still upward, and so increased from the lowest chamber to the highest by the midst.
Darby Bible Translation
And for the side-chambers there was an enlarging, and it went round about the house increasing upward; for the surrounding of the house increased upward round about the house; therefore the house had width upward, and so ascended from the lower story to the upper, by the middle one.
English Revised Version
And the side-chambers were broader as they encompassed the house higher and higher; for the encompassing of the house went higher and higher round about the house: therefore the breadth of the house continued upward; and so one went up from the lowest chamber to the highest by the middle chamber.
Online Parallel Bible