Finding the Third Proportional to 4,403,438 and 9,108,940

Step by Step Solution

1. Step 1: Write the proportion equation
   4,403,438 : 9,108,940 = 9,108,940 : x
2. Step 2: Convert to fraction form
   4,403,438/9,108,940 = 9,108,940/x
3. Step 3: Cross multiply
   4,403,438x = 9,108,940 × 9,108,940
4. Step 4: Simplify right side
   4,403,438x = 82,972,787,923,600
5. Step 5: Solve for x
   x = 82,972,787,923,600/4,403,438
6. Step 6: Final answer
   x = 18,842,728.78