Finding the Third Proportional to 878,966 and 1,320,789

Step by Step Solution

1. Step 1: Write the proportion equation
   878,966 : 1,320,789 = 1,320,789 : x
2. Step 2: Convert to fraction form
   878,966/1,320,789 = 1,320,789/x
3. Step 3: Cross multiply
   878,966x = 1,320,789 × 1,320,789
4. Step 4: Simplify right side
   878,966x = 1,744,483,582,521
5. Step 5: Solve for x
   x = 1,744,483,582,521/878,966
6. Step 6: Final answer
   x = 1,984,699.73