Finding the Third Proportional to 4,484,976 and 9,792,039

Step by Step Solution

1. Step 1: Write the proportion equation
   4,484,976 : 9,792,039 = 9,792,039 : x
2. Step 2: Convert to fraction form
   4,484,976/9,792,039 = 9,792,039/x
3. Step 3: Cross multiply
   4,484,976x = 9,792,039 × 9,792,039
4. Step 4: Simplify right side
   4,484,976x = 95,884,027,777,521
5. Step 5: Solve for x
   x = 95,884,027,777,521/4,484,976
6. Step 6: Final answer
   x = 21,378,938.88