Finding the Third Proportional to 51,690,744 and 80,028,648

Step by Step Solution

1. Step 1: Write the proportion equation
   51,690,744 : 80,028,648 = 80,028,648 : x
2. Step 2: Convert to fraction form
   51,690,744/80,028,648 = 80,028,648/x
3. Step 3: Cross multiply
   51,690,744x = 80,028,648 × 80,028,648
4. Step 4: Simplify right side
   51,690,744x = 6,404,584,500,707,904
5. Step 5: Solve for x
   x = 6,404,584,500,707,904/51,690,744
6. Step 6: Final answer
   x = 123,901,960.10