Finding the Third Proportional to 110.72 and 170.72

Step by Step Solution

1. Step 1: Write the proportion equation
   110.72 : 170.72 = 170.72 : x
2. Step 2: Convert to fraction form
   110.72/170.72 = 170.72/x
3. Step 3: Cross multiply
   110.72x = 170.72 × 170.72
4. Step 4: Simplify right side
   110.72x = 29,144.89
5. Step 5: Solve for x
   x = 29,144.89/110.72
6. Step 6: Final answer
   x = 263.23