Finding the Third Proportional to 647,764,530 and 1,398,744,766.50

Step by Step Solution

1. Step 1: Write the proportion equation
   647,764,530 : 1,398,744,766.50 = 1,398,744,766.50 : x
2. Step 2: Convert to fraction form
   647,764,530/1,398,744,766.50 = 1,398,744,766.50/x
3. Step 3: Cross multiply
   647,764,530x = 1,398,744,766.50 × 1,398,744,766.50
4. Step 4: Simplify right side
   647,764,530x = 1,956,486,921,811,139,584
5. Step 5: Solve for x
   x = 1,956,486,921,811,139,584/647,764,530
6. Step 6: Final answer
   x = 3,020,367,481.08