Finding the Third Proportional to 144,622.69 and 311,470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   144,622.69 : 311,470.31 = 311,470.31 : x
2. Step 2: Convert to fraction form
   144,622.69/311,470.31 = 311,470.31/x
3. Step 3: Cross multiply
   144,622.69x = 311,470.31 × 311,470.31
4. Step 4: Simplify right side
   144,622.69x = 97,013,755,568.85
5. Step 5: Solve for x
   x = 97,013,755,568.85/144,622.69
6. Step 6: Final answer
   x = 670,805.92