Finding the Third Proportional to 12,453 and 18,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453 : 18,436.50 = 18,436.50 : x
2. Step 2: Convert to fraction form
   12,453/18,436.50 = 18,436.50/x
3. Step 3: Cross multiply
   12,453x = 18,436.50 × 18,436.50
4. Step 4: Simplify right side
   12,453x = 339,904,532.25
5. Step 5: Solve for x
   x = 339,904,532.25/12,453
6. Step 6: Final answer
   x = 27,294.99