Finding the Third Proportional to 12,474 and 18,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,474 : 18,709.50 = 18,709.50 : x
2. Step 2: Convert to fraction form
   12,474/18,709.50 = 18,709.50/x
3. Step 3: Cross multiply
   12,474x = 18,709.50 × 18,709.50
4. Step 4: Simplify right side
   12,474x = 350,045,390.25
5. Step 5: Solve for x
   x = 350,045,390.25/12,474
6. Step 6: Final answer
   x = 28,062.00