Finding the Third Proportional to 6,128.16 and 13,228.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.16 : 13,228.31 = 13,228.31 : x
2. Step 2: Convert to fraction form
   6,128.16/13,228.31 = 13,228.31/x
3. Step 3: Cross multiply
   6,128.16x = 13,228.31 × 13,228.31
4. Step 4: Simplify right side
   6,128.16x = 174,988,251.60
5. Step 5: Solve for x
   x = 174,988,251.60/6,128.16
6. Step 6: Final answer
   x = 28,554.80