Finding the Third Proportional to 16,308 and 18,576

Step by Step Solution

1. Step 1: Write the proportion equation
   16,308 : 18,576 = 18,576 : x
2. Step 2: Convert to fraction form
   16,308/18,576 = 18,576/x
3. Step 3: Cross multiply
   16,308x = 18,576 × 18,576
4. Step 4: Simplify right side
   16,308x = 345,067,776
5. Step 5: Solve for x
   x = 345,067,776/16,308
6. Step 6: Final answer
   x = 21,159.42