Finding the Third Proportional to 353,148.50 and 766,499

Step by Step Solution

1. Step 1: Write the proportion equation
   353,148.50 : 766,499 = 766,499 : x
2. Step 2: Convert to fraction form
   353,148.50/766,499 = 766,499/x
3. Step 3: Cross multiply
   353,148.50x = 766,499 × 766,499
4. Step 4: Simplify right side
   353,148.50x = 587,520,717,001
5. Step 5: Solve for x
   x = 587,520,717,001/353,148.50
6. Step 6: Final answer
   x = 1,663,664.77