Finding the Third Proportional to 78,305,920 and 117,404,538

Step by Step Solution

1. Step 1: Write the proportion equation
   78,305,920 : 117,404,538 = 117,404,538 : x
2. Step 2: Convert to fraction form
   78,305,920/117,404,538 = 117,404,538/x
3. Step 3: Cross multiply
   78,305,920x = 117,404,538 × 117,404,538
4. Step 4: Simplify right side
   78,305,920x = 13,783,825,542,993,444
5. Step 5: Solve for x
   x = 13,783,825,542,993,444/78,305,920
6. Step 6: Final answer
   x = 176,025,331.71