Question 890141
{{{(x+3)/2 = 5/x}}}, from the statement of the problem.

==> {{{x^2 + 3x = 10}}} after cross multiplication
<==> {{{x^2 + 3x - 10 = 0}}}
<==> {{{(x+5)(x-2) = 0}}}, after factorization
==> x = -5, or 2

If only positive value is allowed, x = 2.