Finding the Third Proportional to 10,885.50 and 18,150.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.50 : 18,150.75 = 18,150.75 : x
2. Step 2: Convert to fraction form
   10,885.50/18,150.75 = 18,150.75/x
3. Step 3: Cross multiply
   10,885.50x = 18,150.75 × 18,150.75
4. Step 4: Simplify right side
   10,885.50x = 329,449,725.56
5. Step 5: Solve for x
   x = 329,449,725.56/10,885.50
6. Step 6: Final answer
   x = 30,265.01