Finding the Third Proportional to 553,840 and 1,204,878

Step by Step Solution

1. Step 1: Write the proportion equation
   553,840 : 1,204,878 = 1,204,878 : x
2. Step 2: Convert to fraction form
   553,840/1,204,878 = 1,204,878/x
3. Step 3: Cross multiply
   553,840x = 1,204,878 × 1,204,878
4. Step 4: Simplify right side
   553,840x = 1,451,730,994,884
5. Step 5: Solve for x
   x = 1,451,730,994,884/553,840
6. Step 6: Final answer
   x = 2,621,210.09