Finding the Third Proportional to 2,485.13 and 3,715.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.13 : 3,715.31 = 3,715.31 : x
2. Step 2: Convert to fraction form
   2,485.13/3,715.31 = 3,715.31/x
3. Step 3: Cross multiply
   2,485.13x = 3,715.31 × 3,715.31
4. Step 4: Simplify right side
   2,485.13x = 13,803,546.97
5. Step 5: Solve for x
   x = 13,803,546.97/2,485.13
6. Step 6: Final answer
   x = 5,554.47