Finding the Third Proportional to 10,613 and 16,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,613 : 16,418.50 = 16,418.50 : x
2. Step 2: Convert to fraction form
   10,613/16,418.50 = 16,418.50/x
3. Step 3: Cross multiply
   10,613x = 16,418.50 × 16,418.50
4. Step 4: Simplify right side
   10,613x = 269,567,142.25
5. Step 5: Solve for x
   x = 269,567,142.25/10,613
6. Step 6: Final answer
   x = 25,399.71