Finding the Third Proportional to 16,500 and 20,910

Step by Step Solution

1. Step 1: Write the proportion equation
   16,500 : 20,910 = 20,910 : x
2. Step 2: Convert to fraction form
   16,500/20,910 = 20,910/x
3. Step 3: Cross multiply
   16,500x = 20,910 × 20,910
4. Step 4: Simplify right side
   16,500x = 437,228,100
5. Step 5: Solve for x
   x = 437,228,100/16,500
6. Step 6: Final answer
   x = 26,498.67