Finding the Third Proportional to 12,144.94 and 16,144.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,144.94 : 16,144.31 = 16,144.31 : x
2. Step 2: Convert to fraction form
   12,144.94/16,144.31 = 16,144.31/x
3. Step 3: Cross multiply
   12,144.94x = 16,144.31 × 16,144.31
4. Step 4: Simplify right side
   12,144.94x = 260,638,826.10
5. Step 5: Solve for x
   x = 260,638,826.10/12,144.94
6. Step 6: Final answer
   x = 21,460.70