Finding the Third Proportional to 4,212,270 and 8,214,588

Step by Step Solution

1. Step 1: Write the proportion equation
   4,212,270 : 8,214,588 = 8,214,588 : x
2. Step 2: Convert to fraction form
   4,212,270/8,214,588 = 8,214,588/x
3. Step 3: Cross multiply
   4,212,270x = 8,214,588 × 8,214,588
4. Step 4: Simplify right side
   4,212,270x = 67,479,456,009,744
5. Step 5: Solve for x
   x = 67,479,456,009,744/4,212,270
6. Step 6: Final answer
   x = 16,019,736.63