Finding the Third Proportional to 9,920 and 17,572

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920 : 17,572 = 17,572 : x
2. Step 2: Convert to fraction form
   9,920/17,572 = 17,572/x
3. Step 3: Cross multiply
   9,920x = 17,572 × 17,572
4. Step 4: Simplify right side
   9,920x = 308,775,184
5. Step 5: Solve for x
   x = 308,775,184/9,920
6. Step 6: Final answer
   x = 31,126.53