Finding the Third Proportional to 140,688.56 and 308,059.03

Step by Step Solution

1. Step 1: Write the proportion equation
   140,688.56 : 308,059.03 = 308,059.03 : x
2. Step 2: Convert to fraction form
   140,688.56/308,059.03 = 308,059.03/x
3. Step 3: Cross multiply
   140,688.56x = 308,059.03 × 308,059.03
4. Step 4: Simplify right side
   140,688.56x = 94,900,366,734.69
5. Step 5: Solve for x
   x = 94,900,366,734.69/140,688.56
6. Step 6: Final answer
   x = 674,542.16