Finding the Third Proportional to 103.31 and 142.22

Step by Step Solution

1. Step 1: Write the proportion equation
   103.31 : 142.22 = 142.22 : x
2. Step 2: Convert to fraction form
   103.31/142.22 = 142.22/x
3. Step 3: Cross multiply
   103.31x = 142.22 × 142.22
4. Step 4: Simplify right side
   103.31x = 20,226.17
5. Step 5: Solve for x
   x = 20,226.17/103.31
6. Step 6: Final answer
   x = 195.78