Finding the Third Proportional to 2,115,404 and 3,222,688

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,404 : 3,222,688 = 3,222,688 : x
2. Step 2: Convert to fraction form
   2,115,404/3,222,688 = 3,222,688/x
3. Step 3: Cross multiply
   2,115,404x = 3,222,688 × 3,222,688
4. Step 4: Simplify right side
   2,115,404x = 10,385,717,945,344
5. Step 5: Solve for x
   x = 10,385,717,945,344/2,115,404
6. Step 6: Final answer
   x = 4,909,567.13