Finding the Third Proportional to 59,942 and 129,388

Step by Step Solution

1. Step 1: Write the proportion equation
   59,942 : 129,388 = 129,388 : x
2. Step 2: Convert to fraction form
   59,942/129,388 = 129,388/x
3. Step 3: Cross multiply
   59,942x = 129,388 × 129,388
4. Step 4: Simplify right side
   59,942x = 16,741,254,544
5. Step 5: Solve for x
   x = 16,741,254,544/59,942
6. Step 6: Final answer
   x = 279,290.89