3d Geometry

Let \(\mathrm{Q}\) and \(\mathrm{R}\) be two points on the line \(\frac{x+1}{2}=\frac{y+2}{3}=\frac{z-1}{2}\) at a distance \(\sqrt{26}\) from the point \(P(4,2,7)\). Then the square of the area of the triangle \(P Q R\) is ___________.