Finding the Third Proportional to 59,150.25 and 128,136.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,150.25 : 128,136.75 = 128,136.75 : x
2. Step 2: Convert to fraction form
   59,150.25/128,136.75 = 128,136.75/x
3. Step 3: Cross multiply
   59,150.25x = 128,136.75 × 128,136.75
4. Step 4: Simplify right side
   59,150.25x = 16,419,026,700.56
5. Step 5: Solve for x
   x = 16,419,026,700.56/59,150.25
6. Step 6: Final answer
   x = 277,581.70