Finding the Third Proportional to 4,413,888 and 9,457,728

Step by Step Solution

1. Step 1: Write the proportion equation
   4,413,888 : 9,457,728 = 9,457,728 : x
2. Step 2: Convert to fraction form
   4,413,888/9,457,728 = 9,457,728/x
3. Step 3: Cross multiply
   4,413,888x = 9,457,728 × 9,457,728
4. Step 4: Simplify right side
   4,413,888x = 89,448,618,921,984
5. Step 5: Solve for x
   x = 89,448,618,921,984/4,413,888
6. Step 6: Final answer
   x = 20,265,267.02