Finding the Third Proportional to 3,451.36 and 7,219.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.36 : 7,219.76 = 7,219.76 : x
2. Step 2: Convert to fraction form
   3,451.36/7,219.76 = 7,219.76/x
3. Step 3: Cross multiply
   3,451.36x = 7,219.76 × 7,219.76
4. Step 4: Simplify right side
   3,451.36x = 52,124,902.87
5. Step 5: Solve for x
   x = 52,124,902.87/3,451.36
6. Step 6: Final answer
   x = 15,102.72