Finding the Third Proportional to 2,618,712 and 5,635,836

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618,712 : 5,635,836 = 5,635,836 : x
2. Step 2: Convert to fraction form
   2,618,712/5,635,836 = 5,635,836/x
3. Step 3: Cross multiply
   2,618,712x = 5,635,836 × 5,635,836
4. Step 4: Simplify right side
   2,618,712x = 31,762,647,418,896
5. Step 5: Solve for x
   x = 31,762,647,418,896/2,618,712
6. Step 6: Final answer
   x = 12,129,110.58