Finding the Third Proportional to 878,740 and 1,315,086

Step by Step Solution

1. Step 1: Write the proportion equation
   878,740 : 1,315,086 = 1,315,086 : x
2. Step 2: Convert to fraction form
   878,740/1,315,086 = 1,315,086/x
3. Step 3: Cross multiply
   878,740x = 1,315,086 × 1,315,086
4. Step 4: Simplify right side
   878,740x = 1,729,451,187,396
5. Step 5: Solve for x
   x = 1,729,451,187,396/878,740
6. Step 6: Final answer
   x = 1,968,103.41