in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 62813. How many terms are in the series

I noticed you corrected your typing error when you posted this question as "bob"

go back to
http://www.jiskha.com/display.cgi?id=1370303699
and make the necessary changes

BTW, don't switch names from one post to the next.