Finding the Third Proportional to 17,990 and 39,524

Step by Step Solution

1. Step 1: Write the proportion equation
   17,990 : 39,524 = 39,524 : x
2. Step 2: Convert to fraction form
   17,990/39,524 = 39,524/x
3. Step 3: Cross multiply
   17,990x = 39,524 × 39,524
4. Step 4: Simplify right side
   17,990x = 1,562,146,576
5. Step 5: Solve for x
   x = 1,562,146,576/17,990
6. Step 6: Final answer
   x = 86,834.16