Finding the Third Proportional to 396.75 and 396.75

Step by Step Solution

1. Step 1: Write the proportion equation
   396.75 : 396.75 = 396.75 : x
2. Step 2: Convert to fraction form
   396.75/396.75 = 396.75/x
3. Step 3: Cross multiply
   396.75x = 396.75 × 396.75
4. Step 4: Simplify right side
   396.75x = 157,410.56
5. Step 5: Solve for x
   x = 157,410.56/396.75
6. Step 6: Final answer
   x = 396.75