Finding the Third Proportional to 3,339.56 and 7,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,339.56 : 7,142.06 = 7,142.06 : x
2. Step 2: Convert to fraction form
   3,339.56/7,142.06 = 7,142.06/x
3. Step 3: Cross multiply
   3,339.56x = 7,142.06 × 7,142.06
4. Step 4: Simplify right side
   3,339.56x = 51,009,056.75
5. Step 5: Solve for x
   x = 51,009,056.75/3,339.56
6. Step 6: Final answer
   x = 15,274.17