Finding the Third Proportional to 42.05 and 90.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42.05 : 90.54 = 90.54 : x
2. Step 2: Convert to fraction form
   42.05/90.54 = 90.54/x
3. Step 3: Cross multiply
   42.05x = 90.54 × 90.54
4. Step 4: Simplify right side
   42.05x = 8,198.03
5. Step 5: Solve for x
   x = 8,198.03/42.05
6. Step 6: Final answer
   x = 194.96