Finding the Third Proportional to 11,018.25 and 21,480.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,018.25 : 21,480.75 = 21,480.75 : x
2. Step 2: Convert to fraction form
   11,018.25/21,480.75 = 21,480.75/x
3. Step 3: Cross multiply
   11,018.25x = 21,480.75 × 21,480.75
4. Step 4: Simplify right side
   11,018.25x = 461,422,620.56
5. Step 5: Solve for x
   x = 461,422,620.56/11,018.25
6. Step 6: Final answer
   x = 41,878.03