Finding the Third Proportional to 12,019.50 and 18,690.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,019.50 : 18,690.75 = 18,690.75 : x
2. Step 2: Convert to fraction form
   12,019.50/18,690.75 = 18,690.75/x
3. Step 3: Cross multiply
   12,019.50x = 18,690.75 × 18,690.75
4. Step 4: Simplify right side
   12,019.50x = 349,344,135.56
5. Step 5: Solve for x
   x = 349,344,135.56/12,019.50
6. Step 6: Final answer
   x = 29,064.78