Finding the Third Proportional to 19.47 and 40.22

Step by Step Solution

1. Step 1: Write the proportion equation
   19.47 : 40.22 = 40.22 : x
2. Step 2: Convert to fraction form
   19.47/40.22 = 40.22/x
3. Step 3: Cross multiply
   19.47x = 40.22 × 40.22
4. Step 4: Simplify right side
   19.47x = 1,617.55
5. Step 5: Solve for x
   x = 1,617.55/19.47
6. Step 6: Final answer
   x = 83.08