Finding the Third Proportional to 10,389.75 and 21,392.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.75 : 21,392.25 = 21,392.25 : x
2. Step 2: Convert to fraction form
   10,389.75/21,392.25 = 21,392.25/x
3. Step 3: Cross multiply
   10,389.75x = 21,392.25 × 21,392.25
4. Step 4: Simplify right side
   10,389.75x = 457,628,360.06
5. Step 5: Solve for x
   x = 457,628,360.06/10,389.75
6. Step 6: Final answer
   x = 44,046.14