Finding the Third Proportional to 60,105 and 129,039

Step by Step Solution

1. Step 1: Write the proportion equation
   60,105 : 129,039 = 129,039 : x
2. Step 2: Convert to fraction form
   60,105/129,039 = 129,039/x
3. Step 3: Cross multiply
   60,105x = 129,039 × 129,039
4. Step 4: Simplify right side
   60,105x = 16,651,063,521
5. Step 5: Solve for x
   x = 16,651,063,521/60,105
6. Step 6: Final answer
   x = 277,032.92