Finding the Third Proportional to 16,900 and 18,412

Step by Step Solution

1. Step 1: Write the proportion equation
   16,900 : 18,412 = 18,412 : x
2. Step 2: Convert to fraction form
   16,900/18,412 = 18,412/x
3. Step 3: Cross multiply
   16,900x = 18,412 × 18,412
4. Step 4: Simplify right side
   16,900x = 339,001,744
5. Step 5: Solve for x
   x = 339,001,744/16,900
6. Step 6: Final answer
   x = 20,059.27