Finding the Third Proportional to 238.57 and 287.93

Step by Step Solution

1. Step 1: Write the proportion equation
   238.57 : 287.93 = 287.93 : x
2. Step 2: Convert to fraction form
   238.57/287.93 = 287.93/x
3. Step 3: Cross multiply
   238.57x = 287.93 × 287.93
4. Step 4: Simplify right side
   238.57x = 82,903.50
5. Step 5: Solve for x
   x = 82,903.50/238.57
6. Step 6: Final answer
   x = 347.50