Finding the Third Proportional to 2,622,813 and 5,644,206

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622,813 : 5,644,206 = 5,644,206 : x
2. Step 2: Convert to fraction form
   2,622,813/5,644,206 = 5,644,206/x
3. Step 3: Cross multiply
   2,622,813x = 5,644,206 × 5,644,206
4. Step 4: Simplify right side
   2,622,813x = 31,857,061,370,436
5. Step 5: Solve for x
   x = 31,857,061,370,436/2,622,813
6. Step 6: Final answer
   x = 12,146,142.85