Finding the Third Proportional to 3,816,916 and 8,231,664

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816,916 : 8,231,664 = 8,231,664 : x
2. Step 2: Convert to fraction form
   3,816,916/8,231,664 = 8,231,664/x
3. Step 3: Cross multiply
   3,816,916x = 8,231,664 × 8,231,664
4. Step 4: Simplify right side
   3,816,916x = 67,760,292,208,896
5. Step 5: Solve for x
   x = 67,760,292,208,896/3,816,916
6. Step 6: Final answer
   x = 17,752,628.62