Finding the Third Proportional to 72,781.50 and 154,311

Step by Step Solution

1. Step 1: Write the proportion equation
   72,781.50 : 154,311 = 154,311 : x
2. Step 2: Convert to fraction form
   72,781.50/154,311 = 154,311/x
3. Step 3: Cross multiply
   72,781.50x = 154,311 × 154,311
4. Step 4: Simplify right side
   72,781.50x = 23,811,884,721
5. Step 5: Solve for x
   x = 23,811,884,721/72,781.50
6. Step 6: Final answer
   x = 327,169.47