Finding the Third Proportional to 19.94 and 31.81

Step by Step Solution

1. Step 1: Write the proportion equation
   19.94 : 31.81 = 31.81 : x
2. Step 2: Convert to fraction form
   19.94/31.81 = 31.81/x
3. Step 3: Cross multiply
   19.94x = 31.81 × 31.81
4. Step 4: Simplify right side
   19.94x = 1,012.04
5. Step 5: Solve for x
   x = 1,012.04/19.94
6. Step 6: Final answer
   x = 50.76