Finding the Third Proportional to 59,158 and 128,350

Step by Step Solution

1. Step 1: Write the proportion equation
   59,158 : 128,350 = 128,350 : x
2. Step 2: Convert to fraction form
   59,158/128,350 = 128,350/x
3. Step 3: Cross multiply
   59,158x = 128,350 × 128,350
4. Step 4: Simplify right side
   59,158x = 16,473,722,500
5. Step 5: Solve for x
   x = 16,473,722,500/59,158
6. Step 6: Final answer
   x = 278,469.90