Finding the Third Proportional to 90.38 and 228.75

Step by Step Solution

1. Step 1: Write the proportion equation
   90.38 : 228.75 = 228.75 : x
2. Step 2: Convert to fraction form
   90.38/228.75 = 228.75/x
3. Step 3: Cross multiply
   90.38x = 228.75 × 228.75
4. Step 4: Simplify right side
   90.38x = 52,326.56
5. Step 5: Solve for x
   x = 52,326.56/90.38
6. Step 6: Final answer
   x = 578.99