Finding the Third Proportional to 144,362.25 and 320,709.38

Step by Step Solution

1. Step 1: Write the proportion equation
   144,362.25 : 320,709.38 = 320,709.38 : x
2. Step 2: Convert to fraction form
   144,362.25/320,709.38 = 320,709.38/x
3. Step 3: Cross multiply
   144,362.25x = 320,709.38 × 320,709.38
4. Step 4: Simplify right side
   144,362.25x = 102,854,503,212.89
5. Step 5: Solve for x
   x = 102,854,503,212.89/144,362.25
6. Step 6: Final answer
   x = 712,475.06