Finding the Third Proportional to 16,328 and 21,859

Step by Step Solution

1. Step 1: Write the proportion equation
   16,328 : 21,859 = 21,859 : x
2. Step 2: Convert to fraction form
   16,328/21,859 = 21,859/x
3. Step 3: Cross multiply
   16,328x = 21,859 × 21,859
4. Step 4: Simplify right side
   16,328x = 477,815,881
5. Step 5: Solve for x
   x = 477,815,881/16,328
6. Step 6: Final answer
   x = 29,263.59