Finding the Third Proportional to 8,085,709 and 12,212,778

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085,709 : 12,212,778 = 12,212,778 : x
2. Step 2: Convert to fraction form
   8,085,709/12,212,778 = 12,212,778/x
3. Step 3: Cross multiply
   8,085,709x = 12,212,778 × 12,212,778
4. Step 4: Simplify right side
   8,085,709x = 149,151,946,477,284
5. Step 5: Solve for x
   x = 149,151,946,477,284/8,085,709
6. Step 6: Final answer
   x = 18,446,365.86