Finding the Third Proportional to 17,210 and 18,830

Step by Step Solution

1. Step 1: Write the proportion equation
   17,210 : 18,830 = 18,830 : x
2. Step 2: Convert to fraction form
   17,210/18,830 = 18,830/x
3. Step 3: Cross multiply
   17,210x = 18,830 × 18,830
4. Step 4: Simplify right side
   17,210x = 354,568,900
5. Step 5: Solve for x
   x = 354,568,900/17,210
6. Step 6: Final answer
   x = 20,602.49