Finding the Third Proportional to 111.50 and 152

Step by Step Solution

1. Step 1: Write the proportion equation
   111.50 : 152 = 152 : x
2. Step 2: Convert to fraction form
   111.50/152 = 152/x
3. Step 3: Cross multiply
   111.50x = 152 × 152
4. Step 4: Simplify right side
   111.50x = 23,104
5. Step 5: Solve for x
   x = 23,104/111.50
6. Step 6: Final answer
   x = 207.21