Finding the Third Proportional to 339,040.69 and 525,550.78

Step by Step Solution

1. Step 1: Write the proportion equation
   339,040.69 : 525,550.78 = 525,550.78 : x
2. Step 2: Convert to fraction form
   339,040.69/525,550.78 = 525,550.78/x
3. Step 3: Cross multiply
   339,040.69x = 525,550.78 × 525,550.78
4. Step 4: Simplify right side
   339,040.69x = 276,203,623,672.49
5. Step 5: Solve for x
   x = 276,203,623,672.49/339,040.69
6. Step 6: Final answer
   x = 814,662.17