Finding the Third Proportional to 3,816,910 and 8,231,647

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816,910 : 8,231,647 = 8,231,647 : x
2. Step 2: Convert to fraction form
   3,816,910/8,231,647 = 8,231,647/x
3. Step 3: Cross multiply
   3,816,910x = 8,231,647 × 8,231,647
4. Step 4: Simplify right side
   3,816,910x = 67,760,012,332,609
5. Step 5: Solve for x
   x = 67,760,012,332,609/3,816,910
6. Step 6: Final answer
   x = 17,752,583.20