Finding the Third Proportional to 275,608.69 and 648,456.75

Step by Step Solution

1. Step 1: Write the proportion equation
   275,608.69 : 648,456.75 = 648,456.75 : x
2. Step 2: Convert to fraction form
   275,608.69/648,456.75 = 648,456.75/x
3. Step 3: Cross multiply
   275,608.69x = 648,456.75 × 648,456.75
4. Step 4: Simplify right side
   275,608.69x = 420,496,156,620.56
5. Step 5: Solve for x
   x = 420,496,156,620.56/275,608.69
6. Step 6: Final answer
   x = 1,525,699.94