Finding the Third Proportional to 8,155.69 and 13,228.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.69 : 13,228.31 = 13,228.31 : x
2. Step 2: Convert to fraction form
   8,155.69/13,228.31 = 13,228.31/x
3. Step 3: Cross multiply
   8,155.69x = 13,228.31 × 13,228.31
4. Step 4: Simplify right side
   8,155.69x = 174,988,251.60
5. Step 5: Solve for x
   x = 174,988,251.60/8,155.69
6. Step 6: Final answer
   x = 21,455.98