Finding the Third Proportional to 12,089.25 and 18,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.25 : 18,490.78 = 18,490.78 : x
2. Step 2: Convert to fraction form
   12,089.25/18,490.78 = 18,490.78/x
3. Step 3: Cross multiply
   12,089.25x = 18,490.78 × 18,490.78
4. Step 4: Simplify right side
   12,089.25x = 341,908,991.24
5. Step 5: Solve for x
   x = 341,908,991.24/12,089.25
6. Step 6: Final answer
   x = 28,282.07