Finding the Third Proportional to 3,451.78 and 8,101.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.78 : 8,101.69 = 8,101.69 : x
2. Step 2: Convert to fraction form
   3,451.78/8,101.69 = 8,101.69/x
3. Step 3: Cross multiply
   3,451.78x = 8,101.69 × 8,101.69
4. Step 4: Simplify right side
   3,451.78x = 65,637,340.35
5. Step 5: Solve for x
   x = 65,637,340.35/3,451.78
6. Step 6: Final answer
   x = 19,015.50