Finding the Third Proportional to 59,928 and 129,072

Step by Step Solution

1. Step 1: Write the proportion equation
   59,928 : 129,072 = 129,072 : x
2. Step 2: Convert to fraction form
   59,928/129,072 = 129,072/x
3. Step 3: Cross multiply
   59,928x = 129,072 × 129,072
4. Step 4: Simplify right side
   59,928x = 16,659,581,184
5. Step 5: Solve for x
   x = 16,659,581,184/59,928
6. Step 6: Final answer
   x = 277,993.28