Finding the Third Proportional to 438,757 and 663,535.50

Step by Step Solution

1. Step 1: Write the proportion equation
   438,757 : 663,535.50 = 663,535.50 : x
2. Step 2: Convert to fraction form
   438,757/663,535.50 = 663,535.50/x
3. Step 3: Cross multiply
   438,757x = 663,535.50 × 663,535.50
4. Step 4: Simplify right side
   438,757x = 440,279,359,760.25
5. Step 5: Solve for x
   x = 440,279,359,760.25/438,757
6. Step 6: Final answer
   x = 1,003,469.71