Finding the Third Proportional to 72,610.31 and 158,138.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,610.31 : 158,138.72 = 158,138.72 : x
2. Step 2: Convert to fraction form
   72,610.31/158,138.72 = 158,138.72/x
3. Step 3: Cross multiply
   72,610.31x = 158,138.72 × 158,138.72
4. Step 4: Simplify right side
   72,610.31x = 25,007,854,367.89
5. Step 5: Solve for x
   x = 25,007,854,367.89/72,610.31
6. Step 6: Final answer
   x = 344,411.88