Finding the Third Proportional to 125.50 and 173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   125.50 : 173.50 = 173.50 : x
2. Step 2: Convert to fraction form
   125.50/173.50 = 173.50/x
3. Step 3: Cross multiply
   125.50x = 173.50 × 173.50
4. Step 4: Simplify right side
   125.50x = 30,102.25
5. Step 5: Solve for x
   x = 30,102.25/125.50
6. Step 6: Final answer
   x = 239.86