A geometric series has a second term of −43 and a fifth term of 3281.Find the sum of the first 10 terms

-43 =F * R, 3281 =F * R^4, solve for F, R

F = 43 (43/3281)^(1/3) - First Term R = -(3281/43)^(1/3) - Common Ratio.

Sum =(F * [(1 - R^N) / (1 - R)] =-3,644,446.06