Finding the Third Proportional to 72.66 and 158.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72.66 : 158.81 = 158.81 : x
2. Step 2: Convert to fraction form
   72.66/158.81 = 158.81/x
3. Step 3: Cross multiply
   72.66x = 158.81 × 158.81
4. Step 4: Simplify right side
   72.66x = 25,221.41
5. Step 5: Solve for x
   x = 25,221.41/72.66
6. Step 6: Final answer
   x = 347.13