If the ortho center and the circum center of a triangle are $\left(-3,5,2\right),\left(6,2,5\right)$then its centroid is

The centroid $G$ divides the line segment joining the points ortho center $O$ and the circum center $S$  in the ratio$2:1$  internally 

It implies that $G\left(\frac{12-3}{3},\frac{4+5}{3},\frac{10+2}{3}\right)=\boxed{\left(3,3,4\right)}$