Finding the Third Proportional to 59,166 and 128,700

Step by Step Solution

1. Step 1: Write the proportion equation
   59,166 : 128,700 = 128,700 : x
2. Step 2: Convert to fraction form
   59,166/128,700 = 128,700/x
3. Step 3: Cross multiply
   59,166x = 128,700 × 128,700
4. Step 4: Simplify right side
   59,166x = 16,563,690,000
5. Step 5: Solve for x
   x = 16,563,690,000/59,166
6. Step 6: Final answer
   x = 279,952.84