Finding the Third Proportional to 13,992.75 and 21,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,992.75 : 21,124.50 = 21,124.50 : x
2. Step 2: Convert to fraction form
   13,992.75/21,124.50 = 21,124.50/x
3. Step 3: Cross multiply
   13,992.75x = 21,124.50 × 21,124.50
4. Step 4: Simplify right side
   13,992.75x = 446,244,500.25
5. Step 5: Solve for x
   x = 446,244,500.25/13,992.75
6. Step 6: Final answer
   x = 31,891.12