Finding the Third Proportional to 16,476 and 18,636

Step by Step Solution

1. Step 1: Write the proportion equation
   16,476 : 18,636 = 18,636 : x
2. Step 2: Convert to fraction form
   16,476/18,636 = 18,636/x
3. Step 3: Cross multiply
   16,476x = 18,636 × 18,636
4. Step 4: Simplify right side
   16,476x = 347,300,496
5. Step 5: Solve for x
   x = 347,300,496/16,476
6. Step 6: Final answer
   x = 21,079.18