Finding the Third Proportional to 485,676 and 723,532.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,676 : 723,532.50 = 723,532.50 : x
2. Step 2: Convert to fraction form
   485,676/723,532.50 = 723,532.50/x
3. Step 3: Cross multiply
   485,676x = 723,532.50 × 723,532.50
4. Step 4: Simplify right side
   485,676x = 523,499,278,556.25
5. Step 5: Solve for x
   x = 523,499,278,556.25/485,676
6. Step 6: Final answer
   x = 1,077,877.59