Finding the Third Proportional to 3,396,420 and 7,422,696

Step by Step Solution

1. Step 1: Write the proportion equation
   3,396,420 : 7,422,696 = 7,422,696 : x
2. Step 2: Convert to fraction form
   3,396,420/7,422,696 = 7,422,696/x
3. Step 3: Cross multiply
   3,396,420x = 7,422,696 × 7,422,696
4. Step 4: Simplify right side
   3,396,420x = 55,096,415,908,416
5. Step 5: Solve for x
   x = 55,096,415,908,416/3,396,420
6. Step 6: Final answer
   x = 16,221,908.92