Let P(h, k) with h 0, k 0 be a point on the ellipse x^2 a^2 + y^2 b^2 =1 , (where a b 0 ), whose foci are F₁ and F₂ . The normal at P intersects the major axis at Q . If P F₁: P F₂=2: 1 then Q F₁: Q F₂ equals