Finding the Third Proportional to 12,474 and 18,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,474 : 18,913.50 = 18,913.50 : x
2. Step 2: Convert to fraction form
   12,474/18,913.50 = 18,913.50/x
3. Step 3: Cross multiply
   12,474x = 18,913.50 × 18,913.50
4. Step 4: Simplify right side
   12,474x = 357,720,482.25
5. Step 5: Solve for x
   x = 357,720,482.25/12,474
6. Step 6: Final answer
   x = 28,677.29