Finding the Third Proportional to 64,081.50 and 140,505

Step by Step Solution

1. Step 1: Write the proportion equation
   64,081.50 : 140,505 = 140,505 : x
2. Step 2: Convert to fraction form
   64,081.50/140,505 = 140,505/x
3. Step 3: Cross multiply
   64,081.50x = 140,505 × 140,505
4. Step 4: Simplify right side
   64,081.50x = 19,741,655,025
5. Step 5: Solve for x
   x = 19,741,655,025/64,081.50
6. Step 6: Final answer
   x = 308,071.05