Finding the Third Proportional to 60,139.50 and 130,485

Step by Step Solution

1. Step 1: Write the proportion equation
   60,139.50 : 130,485 = 130,485 : x
2. Step 2: Convert to fraction form
   60,139.50/130,485 = 130,485/x
3. Step 3: Cross multiply
   60,139.50x = 130,485 × 130,485
4. Step 4: Simplify right side
   60,139.50x = 17,026,335,225
5. Step 5: Solve for x
   x = 17,026,335,225/60,139.50
6. Step 6: Final answer
   x = 283,114.01