Finding the Third Proportional to 12,928.78 and 19,150.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928.78 : 19,150.17 = 19,150.17 : x
2. Step 2: Convert to fraction form
   12,928.78/19,150.17 = 19,150.17/x
3. Step 3: Cross multiply
   12,928.78x = 19,150.17 × 19,150.17
4. Step 4: Simplify right side
   12,928.78x = 366,729,082.84
5. Step 5: Solve for x
   x = 366,729,082.84/12,928.78
6. Step 6: Final answer
   x = 28,365.33