Finding the Third Proportional to 10,017.50 and 21,424.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,017.50 : 21,424.75 = 21,424.75 : x
2. Step 2: Convert to fraction form
   10,017.50/21,424.75 = 21,424.75/x
3. Step 3: Cross multiply
   10,017.50x = 21,424.75 × 21,424.75
4. Step 4: Simplify right side
   10,017.50x = 459,019,912.56
5. Step 5: Solve for x
   x = 459,019,912.56/10,017.50
6. Step 6: Final answer
   x = 45,821.80