Finding the Third Proportional to 17,557 and 39,005

Step by Step Solution

1. Step 1: Write the proportion equation
   17,557 : 39,005 = 39,005 : x
2. Step 2: Convert to fraction form
   17,557/39,005 = 39,005/x
3. Step 3: Cross multiply
   17,557x = 39,005 × 39,005
4. Step 4: Simplify right side
   17,557x = 1,521,390,025
5. Step 5: Solve for x
   x = 1,521,390,025/17,557
6. Step 6: Final answer
   x = 86,654.33