Finding the Third Proportional to 17,764 and 21,571

Step by Step Solution

1. Step 1: Write the proportion equation
   17,764 : 21,571 = 21,571 : x
2. Step 2: Convert to fraction form
   17,764/21,571 = 21,571/x
3. Step 3: Cross multiply
   17,764x = 21,571 × 21,571
4. Step 4: Simplify right side
   17,764x = 465,308,041
5. Step 5: Solve for x
   x = 465,308,041/17,764
6. Step 6: Final answer
   x = 26,193.88