Finding the Third Proportional to 31,149.56 and 68,529.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,149.56 : 68,529.38 = 68,529.38 : x
2. Step 2: Convert to fraction form
   31,149.56/68,529.38 = 68,529.38/x
3. Step 3: Cross multiply
   31,149.56x = 68,529.38 × 68,529.38
4. Step 4: Simplify right side
   31,149.56x = 4,696,275,237.89
5. Step 5: Solve for x
   x = 4,696,275,237.89/31,149.56
6. Step 6: Final answer
   x = 150,765.37