Finding the Third Proportional to 8,051.91 and 12,456.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,051.91 : 12,456.28 = 12,456.28 : x
2. Step 2: Convert to fraction form
   8,051.91/12,456.28 = 12,456.28/x
3. Step 3: Cross multiply
   8,051.91x = 12,456.28 × 12,456.28
4. Step 4: Simplify right side
   8,051.91x = 155,158,942.58
5. Step 5: Solve for x
   x = 155,158,942.58/8,051.91
6. Step 6: Final answer
   x = 19,269.84