Question 1175257
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Hi
an = ar^(n -1)
a3 = a(6r)^2 = 3465 = 36ar^2  a = 3456/(36r^2)
a6= ar^(6 -1) = ar^5 = {{{ (3456/36r^2)(r^5) = 768}}}
 r^3 = 768(36/3456) = 8
  r = 2   and a = 24        {{{3456/144}}}
Wish You the Best in your Studies.
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