Finding the Third Proportional to 16,564 and 18,328

Step by Step Solution

1. Step 1: Write the proportion equation
   16,564 : 18,328 = 18,328 : x
2. Step 2: Convert to fraction form
   16,564/18,328 = 18,328/x
3. Step 3: Cross multiply
   16,564x = 18,328 × 18,328
4. Step 4: Simplify right side
   16,564x = 335,915,584
5. Step 5: Solve for x
   x = 335,915,584/16,564
6. Step 6: Final answer
   x = 20,279.86