Finding the Third Proportional to 10,008.56 and 21,728.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,008.56 : 21,728.25 = 21,728.25 : x
2. Step 2: Convert to fraction form
   10,008.56/21,728.25 = 21,728.25/x
3. Step 3: Cross multiply
   10,008.56x = 21,728.25 × 21,728.25
4. Step 4: Simplify right side
   10,008.56x = 472,116,848.06
5. Step 5: Solve for x
   x = 472,116,848.06/10,008.56
6. Step 6: Final answer
   x = 47,171.29