Finding the Third Proportional to 3,405.56 and 7,272.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.56 : 7,272.94 = 7,272.94 : x
2. Step 2: Convert to fraction form
   3,405.56/7,272.94 = 7,272.94/x
3. Step 3: Cross multiply
   3,405.56x = 7,272.94 × 7,272.94
4. Step 4: Simplify right side
   3,405.56x = 52,895,619.88
5. Step 5: Solve for x
   x = 52,895,619.88/3,405.56
6. Step 6: Final answer
   x = 15,532.12