Finding the Third Proportional to 2,445.47 and 5,289.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.47 : 5,289.61 = 5,289.61 : x
2. Step 2: Convert to fraction form
   2,445.47/5,289.61 = 5,289.61/x
3. Step 3: Cross multiply
   2,445.47x = 5,289.61 × 5,289.61
4. Step 4: Simplify right side
   2,445.47x = 27,979,967.34
5. Step 5: Solve for x
   x = 27,979,967.34/2,445.47
6. Step 6: Final answer
   x = 11,441.56