Finding the Third Proportional to 15.75 and 33.31

Step by Step Solution

1. Step 1: Write the proportion equation
   15.75 : 33.31 = 33.31 : x
2. Step 2: Convert to fraction form
   15.75/33.31 = 33.31/x
3. Step 3: Cross multiply
   15.75x = 33.31 × 33.31
4. Step 4: Simplify right side
   15.75x = 1,109.72
5. Step 5: Solve for x
   x = 1,109.72/15.75
6. Step 6: Final answer
   x = 70.46