Finding the Third Proportional to 16,482 and 21,645

Step by Step Solution

1. Step 1: Write the proportion equation
   16,482 : 21,645 = 21,645 : x
2. Step 2: Convert to fraction form
   16,482/21,645 = 21,645/x
3. Step 3: Cross multiply
   16,482x = 21,645 × 21,645
4. Step 4: Simplify right side
   16,482x = 468,506,025
5. Step 5: Solve for x
   x = 468,506,025/16,482
6. Step 6: Final answer
   x = 28,425.31