Finding the Third Proportional to 9,981,965 and 20,435,958

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981,965 : 20,435,958 = 20,435,958 : x
2. Step 2: Convert to fraction form
   9,981,965/20,435,958 = 20,435,958/x
3. Step 3: Cross multiply
   9,981,965x = 20,435,958 × 20,435,958
4. Step 4: Simplify right side
   9,981,965x = 417,628,379,377,764
5. Step 5: Solve for x
   x = 417,628,379,377,764/9,981,965
6. Step 6: Final answer
   x = 41,838,293.30