Finding the Third Proportional to 3,692,664 and 7,678,872

Step by Step Solution

1. Step 1: Write the proportion equation
   3,692,664 : 7,678,872 = 7,678,872 : x
2. Step 2: Convert to fraction form
   3,692,664/7,678,872 = 7,678,872/x
3. Step 3: Cross multiply
   3,692,664x = 7,678,872 × 7,678,872
4. Step 4: Simplify right side
   3,692,664x = 58,965,075,192,384
5. Step 5: Solve for x
   x = 58,965,075,192,384/3,692,664
6. Step 6: Final answer
   x = 15,968,166.94