Finding the Third Proportional to 878,688 and 1,315,008

Step by Step Solution

1. Step 1: Write the proportion equation
   878,688 : 1,315,008 = 1,315,008 : x
2. Step 2: Convert to fraction form
   878,688/1,315,008 = 1,315,008/x
3. Step 3: Cross multiply
   878,688x = 1,315,008 × 1,315,008
4. Step 4: Simplify right side
   878,688x = 1,729,246,040,064
5. Step 5: Solve for x
   x = 1,729,246,040,064/878,688
6. Step 6: Final answer
   x = 1,967,986.41