Finding the Third Proportional to 10,001.25 and 21,231.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,001.25 : 21,231.75 = 21,231.75 : x
2. Step 2: Convert to fraction form
   10,001.25/21,231.75 = 21,231.75/x
3. Step 3: Cross multiply
   10,001.25x = 21,231.75 × 21,231.75
4. Step 4: Simplify right side
   10,001.25x = 450,787,208.06
5. Step 5: Solve for x
   x = 450,787,208.06/10,001.25
6. Step 6: Final answer
   x = 45,073.09