Finding the Third Proportional to 1,447.88 and 3,131.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.88 : 3,131.16 = 3,131.16 : x
2. Step 2: Convert to fraction form
   1,447.88/3,131.16 = 3,131.16/x
3. Step 3: Cross multiply
   1,447.88x = 3,131.16 × 3,131.16
4. Step 4: Simplify right side
   1,447.88x = 9,804,139.46
5. Step 5: Solve for x
   x = 9,804,139.46/1,447.88
6. Step 6: Final answer
   x = 6,771.40