Finding the Third Proportional to 42.56 and 91.03

Step by Step Solution

1. Step 1: Write the proportion equation
   42.56 : 91.03 = 91.03 : x
2. Step 2: Convert to fraction form
   42.56/91.03 = 91.03/x
3. Step 3: Cross multiply
   42.56x = 91.03 × 91.03
4. Step 4: Simplify right side
   42.56x = 8,286.69
5. Step 5: Solve for x
   x = 8,286.69/42.56
6. Step 6: Final answer
   x = 194.69