Finding the Third Proportional to 515,826 and 789,003

Step by Step Solution

1. Step 1: Write the proportion equation
   515,826 : 789,003 = 789,003 : x
2. Step 2: Convert to fraction form
   515,826/789,003 = 789,003/x
3. Step 3: Cross multiply
   515,826x = 789,003 × 789,003
4. Step 4: Simplify right side
   515,826x = 622,525,734,009
5. Step 5: Solve for x
   x = 622,525,734,009/515,826
6. Step 6: Final answer
   x = 1,206,852.18