Finding the Third Proportional to 111.50 and 236.75

Step by Step Solution

1. Step 1: Write the proportion equation
   111.50 : 236.75 = 236.75 : x
2. Step 2: Convert to fraction form
   111.50/236.75 = 236.75/x
3. Step 3: Cross multiply
   111.50x = 236.75 × 236.75
4. Step 4: Simplify right side
   111.50x = 56,050.56
5. Step 5: Solve for x
   x = 56,050.56/111.50
6. Step 6: Final answer
   x = 502.70