Finding the Third Proportional to 215,037 and 300,759

Step by Step Solution

1. Step 1: Write the proportion equation
   215,037 : 300,759 = 300,759 : x
2. Step 2: Convert to fraction form
   215,037/300,759 = 300,759/x
3. Step 3: Cross multiply
   215,037x = 300,759 × 300,759
4. Step 4: Simplify right side
   215,037x = 90,455,976,081
5. Step 5: Solve for x
   x = 90,455,976,081/215,037
6. Step 6: Final answer
   x = 420,653.08