Finding the Third Proportional to 2,576.18 and 5,485.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.18 : 5,485.54 = 5,485.54 : x
2. Step 2: Convert to fraction form
   2,576.18/5,485.54 = 5,485.54/x
3. Step 3: Cross multiply
   2,576.18x = 5,485.54 × 5,485.54
4. Step 4: Simplify right side
   2,576.18x = 30,091,095.95
5. Step 5: Solve for x
   x = 30,091,095.95/2,576.18
6. Step 6: Final answer
   x = 11,680.51