Finding the Third Proportional to 1,149,678 and 2,418,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,149,678 : 2,418,420 = 2,418,420 : x
2. Step 2: Convert to fraction form
   1,149,678/2,418,420 = 2,418,420/x
3. Step 3: Cross multiply
   1,149,678x = 2,418,420 × 2,418,420
4. Step 4: Simplify right side
   1,149,678x = 5,848,755,296,400
5. Step 5: Solve for x
   x = 5,848,755,296,400/1,149,678
6. Step 6: Final answer
   x = 5,087,298.61