Finding the Third Proportional to 5,645,909 and 8,972,418

Step by Step Solution

1. Step 1: Write the proportion equation
   5,645,909 : 8,972,418 = 8,972,418 : x
2. Step 2: Convert to fraction form
   5,645,909/8,972,418 = 8,972,418/x
3. Step 3: Cross multiply
   5,645,909x = 8,972,418 × 8,972,418
4. Step 4: Simplify right side
   5,645,909x = 80,504,284,766,724
5. Step 5: Solve for x
   x = 80,504,284,766,724/5,645,909
6. Step 6: Final answer
   x = 14,258,870.41