Finding the Third Proportional to 144,200 and 215,104

Step by Step Solution

1. Step 1: Write the proportion equation
   144,200 : 215,104 = 215,104 : x
2. Step 2: Convert to fraction form
   144,200/215,104 = 215,104/x
3. Step 3: Cross multiply
   144,200x = 215,104 × 215,104
4. Step 4: Simplify right side
   144,200x = 46,269,730,816
5. Step 5: Solve for x
   x = 46,269,730,816/144,200
6. Step 6: Final answer
   x = 320,871.92