Prove x-coordinate of circumcenter of triangle ABC is ((x1 sin⁡2A+x2 sin⁡2B+x3 sin⁡2C)/(sin⁡2A+sin⁡2B+sin⁡2C )

Question

In the given figure I am not able to proceed further to arrive at the proof. Please do help me to solve this.

Answer 1

Here is the correct solution;

GS Negi