Finding the Third Proportional to 63,972,978 and 139,304,676

Step by Step Solution

1. Step 1: Write the proportion equation
   63,972,978 : 139,304,676 = 139,304,676 : x
2. Step 2: Convert to fraction form
   63,972,978/139,304,676 = 139,304,676/x
3. Step 3: Cross multiply
   63,972,978x = 139,304,676 × 139,304,676
4. Step 4: Simplify right side
   63,972,978x = 19,405,792,755,464,976
5. Step 5: Solve for x
   x = 19,405,792,755,464,976/63,972,978
6. Step 6: Final answer
   x = 303,343,589.16