Finding the Third Proportional to 878,256 and 1,889,664

Step by Step Solution

1. Step 1: Write the proportion equation
   878,256 : 1,889,664 = 1,889,664 : x
2. Step 2: Convert to fraction form
   878,256/1,889,664 = 1,889,664/x
3. Step 3: Cross multiply
   878,256x = 1,889,664 × 1,889,664
4. Step 4: Simplify right side
   878,256x = 3,570,830,032,896
5. Step 5: Solve for x
   x = 3,570,830,032,896/878,256
6. Step 6: Final answer
   x = 4,065,819.12