Finding the Third Proportional to 118.69 and 241.31

Step by Step Solution

1. Step 1: Write the proportion equation
   118.69 : 241.31 = 241.31 : x
2. Step 2: Convert to fraction form
   118.69/241.31 = 241.31/x
3. Step 3: Cross multiply
   118.69x = 241.31 × 241.31
4. Step 4: Simplify right side
   118.69x = 58,231.72
5. Step 5: Solve for x
   x = 58,231.72/118.69
6. Step 6: Final answer
   x = 490.63