Finding the Third Proportional to 16,236 and 21,589

Step by Step Solution

1. Step 1: Write the proportion equation
   16,236 : 21,589 = 21,589 : x
2. Step 2: Convert to fraction form
   16,236/21,589 = 21,589/x
3. Step 3: Cross multiply
   16,236x = 21,589 × 21,589
4. Step 4: Simplify right side
   16,236x = 466,084,921
5. Step 5: Solve for x
   x = 466,084,921/16,236
6. Step 6: Final answer
   x = 28,706.88