Finding the Third Proportional to 12,039.89 and 18,528.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,039.89 : 18,528.75 = 18,528.75 : x
2. Step 2: Convert to fraction form
   12,039.89/18,528.75 = 18,528.75/x
3. Step 3: Cross multiply
   12,039.89x = 18,528.75 × 18,528.75
4. Step 4: Simplify right side
   12,039.89x = 343,314,576.56
5. Step 5: Solve for x
   x = 343,314,576.56/12,039.89
6. Step 6: Final answer
   x = 28,514.76