Finding the Third Proportional to 3,816,918 and 8,231,661

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816,918 : 8,231,661 = 8,231,661 : x
2. Step 2: Convert to fraction form
   3,816,918/8,231,661 = 8,231,661/x
3. Step 3: Cross multiply
   3,816,918x = 8,231,661 × 8,231,661
4. Step 4: Simplify right side
   3,816,918x = 67,760,242,818,921
5. Step 5: Solve for x
   x = 67,760,242,818,921/3,816,918
6. Step 6: Final answer
   x = 17,752,606.37