Finding the Third Proportional to 15.94 and 31.31

Step by Step Solution

1. Step 1: Write the proportion equation
   15.94 : 31.31 = 31.31 : x
2. Step 2: Convert to fraction form
   15.94/31.31 = 31.31/x
3. Step 3: Cross multiply
   15.94x = 31.31 × 31.31
4. Step 4: Simplify right side
   15.94x = 980.47
5. Step 5: Solve for x
   x = 980.47/15.94
6. Step 6: Final answer
   x = 61.52