Finding the Third Proportional to 12,429.50 and 18,825

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.50 : 18,825 = 18,825 : x
2. Step 2: Convert to fraction form
   12,429.50/18,825 = 18,825/x
3. Step 3: Cross multiply
   12,429.50x = 18,825 × 18,825
4. Step 4: Simplify right side
   12,429.50x = 354,380,625
5. Step 5: Solve for x
   x = 354,380,625/12,429.50
6. Step 6: Final answer
   x = 28,511.25