Finding the Third Proportional to 17,142 and 18,798

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142 : 18,798 = 18,798 : x
2. Step 2: Convert to fraction form
   17,142/18,798 = 18,798/x
3. Step 3: Cross multiply
   17,142x = 18,798 × 18,798
4. Step 4: Simplify right side
   17,142x = 353,364,804
5. Step 5: Solve for x
   x = 353,364,804/17,142
6. Step 6: Final answer
   x = 20,613.98