Finding the Third Proportional to 109.48 and 173.39

Step by Step Solution

1. Step 1: Write the proportion equation
   109.48 : 173.39 = 173.39 : x
2. Step 2: Convert to fraction form
   109.48/173.39 = 173.39/x
3. Step 3: Cross multiply
   109.48x = 173.39 × 173.39
4. Step 4: Simplify right side
   109.48x = 30,064.31
5. Step 5: Solve for x
   x = 30,064.31/109.48
6. Step 6: Final answer
   x = 274.62