Finding the Third Proportional to 12,045 and 18,919.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,045 : 18,919.50 = 18,919.50 : x
2. Step 2: Convert to fraction form
   12,045/18,919.50 = 18,919.50/x
3. Step 3: Cross multiply
   12,045x = 18,919.50 × 18,919.50
4. Step 4: Simplify right side
   12,045x = 357,947,480.25
5. Step 5: Solve for x
   x = 357,947,480.25/12,045
6. Step 6: Final answer
   x = 29,717.52