Finding the Third Proportional to 10,921.50 and 16,364.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,921.50 : 16,364.50 = 16,364.50 : x
2. Step 2: Convert to fraction form
   10,921.50/16,364.50 = 16,364.50/x
3. Step 3: Cross multiply
   10,921.50x = 16,364.50 × 16,364.50
4. Step 4: Simplify right side
   10,921.50x = 267,796,860.25
5. Step 5: Solve for x
   x = 267,796,860.25/10,921.50
6. Step 6: Final answer
   x = 24,520.15