Finding the Third Proportional to 5,351,840 and 7,629,128

Step by Step Solution

1. Step 1: Write the proportion equation
   5,351,840 : 7,629,128 = 7,629,128 : x
2. Step 2: Convert to fraction form
   5,351,840/7,629,128 = 7,629,128/x
3. Step 3: Cross multiply
   5,351,840x = 7,629,128 × 7,629,128
4. Step 4: Simplify right side
   5,351,840x = 58,203,594,040,384
5. Step 5: Solve for x
   x = 58,203,594,040,384/5,351,840
6. Step 6: Final answer
   x = 10,875,436.12