Finding the Third Proportional to 78,061.50 and 171,675

Step by Step Solution

1. Step 1: Write the proportion equation
   78,061.50 : 171,675 = 171,675 : x
2. Step 2: Convert to fraction form
   78,061.50/171,675 = 171,675/x
3. Step 3: Cross multiply
   78,061.50x = 171,675 × 171,675
4. Step 4: Simplify right side
   78,061.50x = 29,472,305,625
5. Step 5: Solve for x
   x = 29,472,305,625/78,061.50
6. Step 6: Final answer
   x = 377,552.39