Finding the Third Proportional to 16,308 and 18,819

Step by Step Solution

1. Step 1: Write the proportion equation
   16,308 : 18,819 = 18,819 : x
2. Step 2: Convert to fraction form
   16,308/18,819 = 18,819/x
3. Step 3: Cross multiply
   16,308x = 18,819 × 18,819
4. Step 4: Simplify right side
   16,308x = 354,154,761
5. Step 5: Solve for x
   x = 354,154,761/16,308
6. Step 6: Final answer
   x = 21,716.63