Finding the Third Proportional to 1,004,878 and 2,155,340

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004,878 : 2,155,340 = 2,155,340 : x
2. Step 2: Convert to fraction form
   1,004,878/2,155,340 = 2,155,340/x
3. Step 3: Cross multiply
   1,004,878x = 2,155,340 × 2,155,340
4. Step 4: Simplify right side
   1,004,878x = 4,645,490,515,600
5. Step 5: Solve for x
   x = 4,645,490,515,600/1,004,878
6. Step 6: Final answer
   x = 4,622,939.82