Finding the Third Proportional to 3,312,759 and 7,147,446

Step by Step Solution

1. Step 1: Write the proportion equation
   3,312,759 : 7,147,446 = 7,147,446 : x
2. Step 2: Convert to fraction form
   3,312,759/7,147,446 = 7,147,446/x
3. Step 3: Cross multiply
   3,312,759x = 7,147,446 × 7,147,446
4. Step 4: Simplify right side
   3,312,759x = 51,085,984,322,916
5. Step 5: Solve for x
   x = 51,085,984,322,916/3,312,759
6. Step 6: Final answer
   x = 15,420,978.20