Finding the Third Proportional to 456,545.50 and 709,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   456,545.50 : 709,685.50 = 709,685.50 : x
2. Step 2: Convert to fraction form
   456,545.50/709,685.50 = 709,685.50/x
3. Step 3: Cross multiply
   456,545.50x = 709,685.50 × 709,685.50
4. Step 4: Simplify right side
   456,545.50x = 503,653,508,910.25
5. Step 5: Solve for x
   x = 503,653,508,910.25/456,545.50
6. Step 6: Final answer
   x = 1,103,183.60