Finding the Third Proportional to 9,981,976 and 20,435,978

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981,976 : 20,435,978 = 20,435,978 : x
2. Step 2: Convert to fraction form
   9,981,976/20,435,978 = 20,435,978/x
3. Step 3: Cross multiply
   9,981,976x = 20,435,978 × 20,435,978
4. Step 4: Simplify right side
   9,981,976x = 417,629,196,816,484
5. Step 5: Solve for x
   x = 417,629,196,816,484/9,981,976
6. Step 6: Final answer
   x = 41,838,329.09