The restrictions of the FLOAT datatype are specified here. The numbers you've posted look ok, however I'd recommend you check your data for elements which may be out of range.
For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden