Finding the Third Proportional to 10,105.66 and 21,258.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.66 : 21,258.64 = 21,258.64 : x
2. Step 2: Convert to fraction form
   10,105.66/21,258.64 = 21,258.64/x
3. Step 3: Cross multiply
   10,105.66x = 21,258.64 × 21,258.64
4. Step 4: Simplify right side
   10,105.66x = 451,929,936.17
5. Step 5: Solve for x
   x = 451,929,936.17/10,105.66
6. Step 6: Final answer
   x = 44,720.46