Finding the Third Proportional to 38,173,640 and 82,398,978

Step by Step Solution

1. Step 1: Write the proportion equation
   38,173,640 : 82,398,978 = 82,398,978 : x
2. Step 2: Convert to fraction form
   38,173,640/82,398,978 = 82,398,978/x
3. Step 3: Cross multiply
   38,173,640x = 82,398,978 × 82,398,978
4. Step 4: Simplify right side
   38,173,640x = 6,789,591,575,444,484
5. Step 5: Solve for x
   x = 6,789,591,575,444,484/38,173,640
6. Step 6: Final answer
   x = 177,860,732.57