Finding the Third Proportional to 111.50 and 132

Step by Step Solution

1. Step 1: Write the proportion equation
   111.50 : 132 = 132 : x
2. Step 2: Convert to fraction form
   111.50/132 = 132/x
3. Step 3: Cross multiply
   111.50x = 132 × 132
4. Step 4: Simplify right side
   111.50x = 17,424
5. Step 5: Solve for x
   x = 17,424/111.50
6. Step 6: Final answer
   x = 156.27