Finding the Third Proportional to 140,260.50 and 308,541.38

Step by Step Solution

1. Step 1: Write the proportion equation
   140,260.50 : 308,541.38 = 308,541.38 : x
2. Step 2: Convert to fraction form
   140,260.50/308,541.38 = 308,541.38/x
3. Step 3: Cross multiply
   140,260.50x = 308,541.38 × 308,541.38
4. Step 4: Simplify right side
   140,260.50x = 95,197,780,086.89
5. Step 5: Solve for x
   x = 95,197,780,086.89/140,260.50
6. Step 6: Final answer
   x = 678,721.24