Finding the Third Proportional to 16,200 and 24,990

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200 : 24,990 = 24,990 : x
2. Step 2: Convert to fraction form
   16,200/24,990 = 24,990/x
3. Step 3: Cross multiply
   16,200x = 24,990 × 24,990
4. Step 4: Simplify right side
   16,200x = 624,500,100
5. Step 5: Solve for x
   x = 624,500,100/16,200
6. Step 6: Final answer
   x = 38,549.39