Finding the Third Proportional to 78,469.50 and 171,610

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.50 : 171,610 = 171,610 : x
2. Step 2: Convert to fraction form
   78,469.50/171,610 = 171,610/x
3. Step 3: Cross multiply
   78,469.50x = 171,610 × 171,610
4. Step 4: Simplify right side
   78,469.50x = 29,449,992,100
5. Step 5: Solve for x
   x = 29,449,992,100/78,469.50
6. Step 6: Final answer
   x = 375,304.95