Finding the Third Proportional to 18,204.75 and 21,211.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,204.75 : 21,211.88 = 21,211.88 : x
2. Step 2: Convert to fraction form
   18,204.75/21,211.88 = 21,211.88/x
3. Step 3: Cross multiply
   18,204.75x = 21,211.88 × 21,211.88
4. Step 4: Simplify right side
   18,204.75x = 449,943,641.02
5. Step 5: Solve for x
   x = 449,943,641.02/18,204.75
6. Step 6: Final answer
   x = 24,715.73