Finding the Third Proportional to 16,319 and 21,454

Step by Step Solution

1. Step 1: Write the proportion equation
   16,319 : 21,454 = 21,454 : x
2. Step 2: Convert to fraction form
   16,319/21,454 = 21,454/x
3. Step 3: Cross multiply
   16,319x = 21,454 × 21,454
4. Step 4: Simplify right side
   16,319x = 460,274,116
5. Step 5: Solve for x
   x = 460,274,116/16,319
6. Step 6: Final answer
   x = 28,204.80