Finding the Third Proportional to 3,455,765 and 7,678,544

Step by Step Solution

1. Step 1: Write the proportion equation
   3,455,765 : 7,678,544 = 7,678,544 : x
2. Step 2: Convert to fraction form
   3,455,765/7,678,544 = 7,678,544/x
3. Step 3: Cross multiply
   3,455,765x = 7,678,544 × 7,678,544
4. Step 4: Simplify right side
   3,455,765x = 58,960,037,959,936
5. Step 5: Solve for x
   x = 58,960,037,959,936/3,455,765
6. Step 6: Final answer
   x = 17,061,356.30