Finding the Third Proportional to 58,761 and 128,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,761 : 128,105.50 = 128,105.50 : x
2. Step 2: Convert to fraction form
   58,761/128,105.50 = 128,105.50/x
3. Step 3: Cross multiply
   58,761x = 128,105.50 × 128,105.50
4. Step 4: Simplify right side
   58,761x = 16,411,019,130.25
5. Step 5: Solve for x
   x = 16,411,019,130.25/58,761
6. Step 6: Final answer
   x = 279,284.20