Finding the Third Proportional to 17,909 and 39,142

Step by Step Solution

1. Step 1: Write the proportion equation
   17,909 : 39,142 = 39,142 : x
2. Step 2: Convert to fraction form
   17,909/39,142 = 39,142/x
3. Step 3: Cross multiply
   17,909x = 39,142 × 39,142
4. Step 4: Simplify right side
   17,909x = 1,532,096,164
5. Step 5: Solve for x
   x = 1,532,096,164/17,909
6. Step 6: Final answer
   x = 85,548.95