Finding the Third Proportional to 238.88 and 357.38

Step by Step Solution

1. Step 1: Write the proportion equation
   238.88 : 357.38 = 357.38 : x
2. Step 2: Convert to fraction form
   238.88/357.38 = 357.38/x
3. Step 3: Cross multiply
   238.88x = 357.38 × 357.38
4. Step 4: Simplify right side
   238.88x = 127,716.89
5. Step 5: Solve for x
   x = 127,716.89/238.88
6. Step 6: Final answer
   x = 534.66