Finding the Third Proportional to 17,128 and 39,684

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128 : 39,684 = 39,684 : x
2. Step 2: Convert to fraction form
   17,128/39,684 = 39,684/x
3. Step 3: Cross multiply
   17,128x = 39,684 × 39,684
4. Step 4: Simplify right side
   17,128x = 1,574,819,856
5. Step 5: Solve for x
   x = 1,574,819,856/17,128
6. Step 6: Final answer
   x = 91,944.18