Finding the Third Proportional to 31.34 and 67.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31.34 : 67.03 = 67.03 : x
2. Step 2: Convert to fraction form
   31.34/67.03 = 67.03/x
3. Step 3: Cross multiply
   31.34x = 67.03 × 67.03
4. Step 4: Simplify right side
   31.34x = 4,493.19
5. Step 5: Solve for x
   x = 4,493.19/31.34
6. Step 6: Final answer
   x = 143.35