Finding the Third Proportional to 16,820 and 28,020

Step by Step Solution

1. Step 1: Write the proportion equation
   16,820 : 28,020 = 28,020 : x
2. Step 2: Convert to fraction form
   16,820/28,020 = 28,020/x
3. Step 3: Cross multiply
   16,820x = 28,020 × 28,020
4. Step 4: Simplify right side
   16,820x = 785,120,400
5. Step 5: Solve for x
   x = 785,120,400/16,820
6. Step 6: Final answer
   x = 46,677.79