Finding the Third Proportional to 7,990 and 17,570

Step by Step Solution

1. Step 1: Write the proportion equation
   7,990 : 17,570 = 17,570 : x
2. Step 2: Convert to fraction form
   7,990/17,570 = 17,570/x
3. Step 3: Cross multiply
   7,990x = 17,570 × 17,570
4. Step 4: Simplify right side
   7,990x = 308,704,900
5. Step 5: Solve for x
   x = 308,704,900/7,990
6. Step 6: Final answer
   x = 38,636.41