Finding the Third Proportional to 425,697 and 659,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,697 : 659,200.50 = 659,200.50 : x
2. Step 2: Convert to fraction form
   425,697/659,200.50 = 659,200.50/x
3. Step 3: Cross multiply
   425,697x = 659,200.50 × 659,200.50
4. Step 4: Simplify right side
   425,697x = 434,545,299,200.25
5. Step 5: Solve for x
   x = 434,545,299,200.25/425,697
6. Step 6: Final answer
   x = 1,020,785.44