Finding the Third Proportional to 71,939.81 and 156,481.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71,939.81 : 156,481.31 = 156,481.31 : x
2. Step 2: Convert to fraction form
   71,939.81/156,481.31 = 156,481.31/x
3. Step 3: Cross multiply
   71,939.81x = 156,481.31 × 156,481.31
4. Step 4: Simplify right side
   71,939.81x = 24,486,401,161.72
5. Step 5: Solve for x
   x = 24,486,401,161.72/71,939.81
6. Step 6: Final answer
   x = 340,373.44