Finding the Third Proportional to 65,687.25 and 144,496.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,687.25 : 144,496.50 = 144,496.50 : x
2. Step 2: Convert to fraction form
   65,687.25/144,496.50 = 144,496.50/x
3. Step 3: Cross multiply
   65,687.25x = 144,496.50 × 144,496.50
4. Step 4: Simplify right side
   65,687.25x = 20,879,238,512.25
5. Step 5: Solve for x
   x = 20,879,238,512.25/65,687.25
6. Step 6: Final answer
   x = 317,858.31