Finding the Third Proportional to 16,776 and 21,843

Step by Step Solution

1. Step 1: Write the proportion equation
   16,776 : 21,843 = 21,843 : x
2. Step 2: Convert to fraction form
   16,776/21,843 = 21,843/x
3. Step 3: Cross multiply
   16,776x = 21,843 × 21,843
4. Step 4: Simplify right side
   16,776x = 477,116,649
5. Step 5: Solve for x
   x = 477,116,649/16,776
6. Step 6: Final answer
   x = 28,440.43