Finding the Third Proportional to 3,715.31 and 4,140.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.31 : 4,140.56 = 4,140.56 : x
2. Step 2: Convert to fraction form
   3,715.31/4,140.56 = 4,140.56/x
3. Step 3: Cross multiply
   3,715.31x = 4,140.56 × 4,140.56
4. Step 4: Simplify right side
   3,715.31x = 17,144,257.82
5. Step 5: Solve for x
   x = 17,144,257.82/3,715.31
6. Step 6: Final answer
   x = 4,614.49