Finding the Third Proportional to 177,647,499 and 396,141,912

Step by Step Solution

1. Step 1: Write the proportion equation
   177,647,499 : 396,141,912 = 396,141,912 : x
2. Step 2: Convert to fraction form
   177,647,499/396,141,912 = 396,141,912/x
3. Step 3: Cross multiply
   177,647,499x = 396,141,912 × 396,141,912
4. Step 4: Simplify right side
   177,647,499x = 156,928,414,443,015,744
5. Step 5: Solve for x
   x = 156,928,414,443,015,744/177,647,499
6. Step 6: Final answer
   x = 883,369,680.55