Finding the Third Proportional to 215,724,638 and 471,807,976

Step by Step Solution

1. Step 1: Write the proportion equation
   215,724,638 : 471,807,976 = 471,807,976 : x
2. Step 2: Convert to fraction form
   215,724,638/471,807,976 = 471,807,976/x
3. Step 3: Cross multiply
   215,724,638x = 471,807,976 × 471,807,976
4. Step 4: Simplify right side
   215,724,638x = 222,602,766,217,216,576
5. Step 5: Solve for x
   x = 222,602,766,217,216,576/215,724,638
6. Step 6: Final answer
   x = 1,031,883,832.47