Finding the Third Proportional to 4,403,422 and 9,108,909

Step by Step Solution

1. Step 1: Write the proportion equation
   4,403,422 : 9,108,909 = 9,108,909 : x
2. Step 2: Convert to fraction form
   4,403,422/9,108,909 = 9,108,909/x
3. Step 3: Cross multiply
   4,403,422x = 9,108,909 × 9,108,909
4. Step 4: Simplify right side
   4,403,422x = 82,972,223,170,281
5. Step 5: Solve for x
   x = 82,972,223,170,281/4,403,422
6. Step 6: Final answer
   x = 18,842,668.99