Finding the Third Proportional to 3,778,863 and 7,716,338

Step by Step Solution

1. Step 1: Write the proportion equation
   3,778,863 : 7,716,338 = 7,716,338 : x
2. Step 2: Convert to fraction form
   3,778,863/7,716,338 = 7,716,338/x
3. Step 3: Cross multiply
   3,778,863x = 7,716,338 × 7,716,338
4. Step 4: Simplify right side
   3,778,863x = 59,541,872,130,244
5. Step 5: Solve for x
   x = 59,541,872,130,244/3,778,863
6. Step 6: Final answer
   x = 15,756,557.50