Finding the Third Proportional to 59,105.53 and 128,258.02

Step by Step Solution

1. Step 1: Write the proportion equation
   59,105.53 : 128,258.02 = 128,258.02 : x
2. Step 2: Convert to fraction form
   59,105.53/128,258.02 = 128,258.02/x
3. Step 3: Cross multiply
   59,105.53x = 128,258.02 × 128,258.02
4. Step 4: Simplify right side
   59,105.53x = 16,450,118,572.06
5. Step 5: Solve for x
   x = 16,450,118,572.06/59,105.53
6. Step 6: Final answer
   x = 278,317.75