Finding the Third Proportional to 16.31 and 34.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16.31 : 34.88 = 34.88 : x
2. Step 2: Convert to fraction form
   16.31/34.88 = 34.88/x
3. Step 3: Cross multiply
   16.31x = 34.88 × 34.88
4. Step 4: Simplify right side
   16.31x = 1,216.27
5. Step 5: Solve for x
   x = 1,216.27/16.31
6. Step 6: Final answer
   x = 74.56