Finding the Third Proportional to 72.25 and 173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72.25 : 173.50 = 173.50 : x
2. Step 2: Convert to fraction form
   72.25/173.50 = 173.50/x
3. Step 3: Cross multiply
   72.25x = 173.50 × 173.50
4. Step 4: Simplify right side
   72.25x = 30,102.25
5. Step 5: Solve for x
   x = 30,102.25/72.25
6. Step 6: Final answer
   x = 416.64