Finding the Third Proportional to 816,578 and 1,200,675

Step by Step Solution

1. Step 1: Write the proportion equation
   816,578 : 1,200,675 = 1,200,675 : x
2. Step 2: Convert to fraction form
   816,578/1,200,675 = 1,200,675/x
3. Step 3: Cross multiply
   816,578x = 1,200,675 × 1,200,675
4. Step 4: Simplify right side
   816,578x = 1,441,620,455,625
5. Step 5: Solve for x
   x = 1,441,620,455,625/816,578
6. Step 6: Final answer
   x = 1,765,441.21