Finding the Third Proportional to 2,687.34 and 4,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687.34 : 4,071.56 = 4,071.56 : x
2. Step 2: Convert to fraction form
   2,687.34/4,071.56 = 4,071.56/x
3. Step 3: Cross multiply
   2,687.34x = 4,071.56 × 4,071.56
4. Step 4: Simplify right side
   2,687.34x = 16,577,621.19
5. Step 5: Solve for x
   x = 16,577,621.19/2,687.34
6. Step 6: Final answer
   x = 6,168.78