Finding the Third Proportional to 878,023 and 1,780,268

Step by Step Solution

1. Step 1: Write the proportion equation
   878,023 : 1,780,268 = 1,780,268 : x
2. Step 2: Convert to fraction form
   878,023/1,780,268 = 1,780,268/x
3. Step 3: Cross multiply
   878,023x = 1,780,268 × 1,780,268
4. Step 4: Simplify right side
   878,023x = 3,169,354,151,824
5. Step 5: Solve for x
   x = 3,169,354,151,824/878,023
6. Step 6: Final answer
   x = 3,609,648.21