Finding the Third Proportional to 10,812.38 and 16,421.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,812.38 : 16,421.63 = 16,421.63 : x
2. Step 2: Convert to fraction form
   10,812.38/16,421.63 = 16,421.63/x
3. Step 3: Cross multiply
   10,812.38x = 16,421.63 × 16,421.63
4. Step 4: Simplify right side
   10,812.38x = 269,669,767.64
5. Step 5: Solve for x
   x = 269,669,767.64/10,812.38
6. Step 6: Final answer
   x = 24,940.84