Finding the Third Proportional to 3,816,911 and 8,231,649

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816,911 : 8,231,649 = 8,231,649 : x
2. Step 2: Convert to fraction form
   3,816,911/8,231,649 = 8,231,649/x
3. Step 3: Cross multiply
   3,816,911x = 8,231,649 × 8,231,649
4. Step 4: Simplify right side
   3,816,911x = 67,760,045,259,201
5. Step 5: Solve for x
   x = 67,760,045,259,201/3,816,911
6. Step 6: Final answer
   x = 17,752,587.17