Finding the Third Proportional to 42.28 and 92.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42.28 : 92.20 = 92.20 : x
2. Step 2: Convert to fraction form
   42.28/92.20 = 92.20/x
3. Step 3: Cross multiply
   42.28x = 92.20 × 92.20
4. Step 4: Simplify right side
   42.28x = 8,501.42
5. Step 5: Solve for x
   x = 8,501.42/42.28
6. Step 6: Final answer
   x = 201.07