Finding the Third Proportional to 13,992.75 and 20,806.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,992.75 : 20,806.88 = 20,806.88 : x
2. Step 2: Convert to fraction form
   13,992.75/20,806.88 = 20,806.88/x
3. Step 3: Cross multiply
   13,992.75x = 20,806.88 × 20,806.88
4. Step 4: Simplify right side
   13,992.75x = 432,926,047.27
5. Step 5: Solve for x
   x = 432,926,047.27/13,992.75
6. Step 6: Final answer
   x = 30,939.31