Finding the Third Proportional to 8,338,270 and 12,458,306

Step by Step Solution

1. Step 1: Write the proportion equation
   8,338,270 : 12,458,306 = 12,458,306 : x
2. Step 2: Convert to fraction form
   8,338,270/12,458,306 = 12,458,306/x
3. Step 3: Cross multiply
   8,338,270x = 12,458,306 × 12,458,306
4. Step 4: Simplify right side
   8,338,270x = 155,209,388,389,636
5. Step 5: Solve for x
   x = 155,209,388,389,636/8,338,270
6. Step 6: Final answer
   x = 18,614,099.61