Finding the Third Proportional to 353,149 and 766,500.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,149 : 766,500.50 = 766,500.50 : x
2. Step 2: Convert to fraction form
   353,149/766,500.50 = 766,500.50/x
3. Step 3: Cross multiply
   353,149x = 766,500.50 × 766,500.50
4. Step 4: Simplify right side
   353,149x = 587,523,016,500.25
5. Step 5: Solve for x
   x = 587,523,016,500.25/353,149
6. Step 6: Final answer
   x = 1,663,668.92