Finding the Third Proportional to 90.38 and 105.38

Step by Step Solution

1. Step 1: Write the proportion equation
   90.38 : 105.38 = 105.38 : x
2. Step 2: Convert to fraction form
   90.38/105.38 = 105.38/x
3. Step 3: Cross multiply
   90.38x = 105.38 × 105.38
4. Step 4: Simplify right side
   90.38x = 11,103.89
5. Step 5: Solve for x
   x = 11,103.89/90.38
6. Step 6: Final answer
   x = 122.86