Finding the Third Proportional to 155.25 and 246.38

Step by Step Solution

1. Step 1: Write the proportion equation
   155.25 : 246.38 = 246.38 : x
2. Step 2: Convert to fraction form
   155.25/246.38 = 246.38/x
3. Step 3: Cross multiply
   155.25x = 246.38 × 246.38
4. Step 4: Simplify right side
   155.25x = 60,700.64
5. Step 5: Solve for x
   x = 60,700.64/155.25
6. Step 6: Final answer
   x = 390.99