Finding the Third Proportional to 10,018.69 and 21,480.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,018.69 : 21,480.19 = 21,480.19 : x
2. Step 2: Convert to fraction form
   10,018.69/21,480.19 = 21,480.19/x
3. Step 3: Cross multiply
   10,018.69x = 21,480.19 × 21,480.19
4. Step 4: Simplify right side
   10,018.69x = 461,398,455.04
5. Step 5: Solve for x
   x = 461,398,455.04/10,018.69
6. Step 6: Final answer
   x = 46,053.78