Finding the Third Proportional to 2,188,172 and 3,515,806

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,172 : 3,515,806 = 3,515,806 : x
2. Step 2: Convert to fraction form
   2,188,172/3,515,806 = 3,515,806/x
3. Step 3: Cross multiply
   2,188,172x = 3,515,806 × 3,515,806
4. Step 4: Simplify right side
   2,188,172x = 12,360,891,829,636
5. Step 5: Solve for x
   x = 12,360,891,829,636/2,188,172
6. Step 6: Final answer
   x = 5,648,958.05