Finding the Third Proportional to 2,455.31 and 5,435.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.31 : 5,435.86 = 5,435.86 : x
2. Step 2: Convert to fraction form
   2,455.31/5,435.86 = 5,435.86/x
3. Step 3: Cross multiply
   2,455.31x = 5,435.86 × 5,435.86
4. Step 4: Simplify right side
   2,455.31x = 29,548,567.14
5. Step 5: Solve for x
   x = 29,548,567.14/2,455.31
6. Step 6: Final answer
   x = 12,034.54