Finding the Third Proportional to 16,720 and 22,380

Step by Step Solution

1. Step 1: Write the proportion equation
   16,720 : 22,380 = 22,380 : x
2. Step 2: Convert to fraction form
   16,720/22,380 = 22,380/x
3. Step 3: Cross multiply
   16,720x = 22,380 × 22,380
4. Step 4: Simplify right side
   16,720x = 500,864,400
5. Step 5: Solve for x
   x = 500,864,400/16,720
6. Step 6: Final answer
   x = 29,956.00