Finding the Third Proportional to 434,443.50 and 664,605

Step by Step Solution

1. Step 1: Write the proportion equation
   434,443.50 : 664,605 = 664,605 : x
2. Step 2: Convert to fraction form
   434,443.50/664,605 = 664,605/x
3. Step 3: Cross multiply
   434,443.50x = 664,605 × 664,605
4. Step 4: Simplify right side
   434,443.50x = 441,699,806,025
5. Step 5: Solve for x
   x = 441,699,806,025/434,443.50
6. Step 6: Final answer
   x = 1,016,702.53