Finding the Third Proportional to 1,431.56 and 3,103.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.56 : 3,103.88 = 3,103.88 : x
2. Step 2: Convert to fraction form
   1,431.56/3,103.88 = 3,103.88/x
3. Step 3: Cross multiply
   1,431.56x = 3,103.88 × 3,103.88
4. Step 4: Simplify right side
   1,431.56x = 9,634,040.02
5. Step 5: Solve for x
   x = 9,634,040.02/1,431.56
6. Step 6: Final answer
   x = 6,729.74