Finding the Third Proportional to 59,150.81 and 128,138.06

Step by Step Solution

1. Step 1: Write the proportion equation
   59,150.81 : 128,138.06 = 128,138.06 : x
2. Step 2: Convert to fraction form
   59,150.81/128,138.06 = 128,138.06/x
3. Step 3: Cross multiply
   59,150.81x = 128,138.06 × 128,138.06
4. Step 4: Simplify right side
   59,150.81x = 16,419,363,061.25
5. Step 5: Solve for x
   x = 16,419,363,061.25/59,150.81
6. Step 6: Final answer
   x = 277,584.74