Finding the Third Proportional to 2,631,421 and 5,668,886

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631,421 : 5,668,886 = 5,668,886 : x
2. Step 2: Convert to fraction form
   2,631,421/5,668,886 = 5,668,886/x
3. Step 3: Cross multiply
   2,631,421x = 5,668,886 × 5,668,886
4. Step 4: Simplify right side
   2,631,421x = 32,136,268,480,996
5. Step 5: Solve for x
   x = 32,136,268,480,996/2,631,421
6. Step 6: Final answer
   x = 12,212,515.02