Finding the Third Proportional to 4,155.47 and 8,928.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,155.47 : 8,928.56 = 8,928.56 : x
2. Step 2: Convert to fraction form
   4,155.47/8,928.56 = 8,928.56/x
3. Step 3: Cross multiply
   4,155.47x = 8,928.56 × 8,928.56
4. Step 4: Simplify right side
   4,155.47x = 79,719,228.32
5. Step 5: Solve for x
   x = 79,719,228.32/4,155.47
6. Step 6: Final answer
   x = 19,184.17