Finding the Third Proportional to 118.94 and 280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118.94 : 280.25 = 280.25 : x
2. Step 2: Convert to fraction form
   118.94/280.25 = 280.25/x
3. Step 3: Cross multiply
   118.94x = 280.25 × 280.25
4. Step 4: Simplify right side
   118.94x = 78,540.06
5. Step 5: Solve for x
   x = 78,540.06/118.94
6. Step 6: Final answer
   x = 660.35