Finding the Third Proportional to 111.09 and 241.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111.09 : 241.59 = 241.59 : x
2. Step 2: Convert to fraction form
   111.09/241.59 = 241.59/x
3. Step 3: Cross multiply
   111.09x = 241.59 × 241.59
4. Step 4: Simplify right side
   111.09x = 58,367.54
5. Step 5: Solve for x
   x = 58,367.54/111.09
6. Step 6: Final answer
   x = 525.39