Finding the Third Proportional to 2,491.31 and 5,144.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.31 : 5,144.63 = 5,144.63 : x
2. Step 2: Convert to fraction form
   2,491.31/5,144.63 = 5,144.63/x
3. Step 3: Cross multiply
   2,491.31x = 5,144.63 × 5,144.63
4. Step 4: Simplify right side
   2,491.31x = 26,467,166.39
5. Step 5: Solve for x
   x = 26,467,166.39/2,491.31
6. Step 6: Final answer
   x = 10,623.78