Finding the Third Proportional to 64,600.50 and 141,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,600.50 : 141,229.50 = 141,229.50 : x
2. Step 2: Convert to fraction form
   64,600.50/141,229.50 = 141,229.50/x
3. Step 3: Cross multiply
   64,600.50x = 141,229.50 × 141,229.50
4. Step 4: Simplify right side
   64,600.50x = 19,945,771,670.25
5. Step 5: Solve for x
   x = 19,945,771,670.25/64,600.50
6. Step 6: Final answer
   x = 308,755.69