Finding the Third Proportional to 142.88 and 227.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142.88 : 227.25 = 227.25 : x
2. Step 2: Convert to fraction form
   142.88/227.25 = 227.25/x
3. Step 3: Cross multiply
   142.88x = 227.25 × 227.25
4. Step 4: Simplify right side
   142.88x = 51,642.56
5. Step 5: Solve for x
   x = 51,642.56/142.88
6. Step 6: Final answer
   x = 361.45