Finding the Third Proportional to 171.72 and 366.22

Step by Step Solution

1. Step 1: Write the proportion equation
   171.72 : 366.22 = 366.22 : x
2. Step 2: Convert to fraction form
   171.72/366.22 = 366.22/x
3. Step 3: Cross multiply
   171.72x = 366.22 × 366.22
4. Step 4: Simplify right side
   171.72x = 134,116.17
5. Step 5: Solve for x
   x = 134,116.17/171.72
6. Step 6: Final answer
   x = 781.02