Finding the Third Proportional to 12.94 and 19.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12.94 : 19.83 = 19.83 : x
2. Step 2: Convert to fraction form
   12.94/19.83 = 19.83/x
3. Step 3: Cross multiply
   12.94x = 19.83 × 19.83
4. Step 4: Simplify right side
   12.94x = 393.15
5. Step 5: Solve for x
   x = 393.15/12.94
6. Step 6: Final answer
   x = 30.39