Finding the Third Proportional to 9,770 and 21,728

Step by Step Solution

1. Step 1: Write the proportion equation
   9,770 : 21,728 = 21,728 : x
2. Step 2: Convert to fraction form
   9,770/21,728 = 21,728/x
3. Step 3: Cross multiply
   9,770x = 21,728 × 21,728
4. Step 4: Simplify right side
   9,770x = 472,105,984
5. Step 5: Solve for x
   x = 472,105,984/9,770
6. Step 6: Final answer
   x = 48,322.00