Consider the diophantine equation ax(3) + by + c = xyz, where a, b and c are positive integers such that gcd (a, c) = 1 and c is square-free. Let (x, y, z) be a positive integral solution of the equation. In this paper, we shall give an upper bound for x, y and z in terms of the given inputs a, b and c. Also, we apply our results to investigate the divisors of the elements of the sequence {an(3) + c} in residue classes.