Finding the Third Proportional to 811,722 and 1,261,782

Step by Step Solution

1. Step 1: Write the proportion equation
   811,722 : 1,261,782 = 1,261,782 : x
2. Step 2: Convert to fraction form
   811,722/1,261,782 = 1,261,782/x
3. Step 3: Cross multiply
   811,722x = 1,261,782 × 1,261,782
4. Step 4: Simplify right side
   811,722x = 1,592,093,815,524
5. Step 5: Solve for x
   x = 1,592,093,815,524/811,722
6. Step 6: Final answer
   x = 1,961,378.18