Finding the Third Proportional to 10,239.88 and 21,718.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,239.88 : 21,718.75 = 21,718.75 : x
2. Step 2: Convert to fraction form
   10,239.88/21,718.75 = 21,718.75/x
3. Step 3: Cross multiply
   10,239.88x = 21,718.75 × 21,718.75
4. Step 4: Simplify right side
   10,239.88x = 471,704,101.56
5. Step 5: Solve for x
   x = 471,704,101.56/10,239.88
6. Step 6: Final answer
   x = 46,065.42