Finding the Third Proportional to 3,907,872 and 8,235,648

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907,872 : 8,235,648 = 8,235,648 : x
2. Step 2: Convert to fraction form
   3,907,872/8,235,648 = 8,235,648/x
3. Step 3: Cross multiply
   3,907,872x = 8,235,648 × 8,235,648
4. Step 4: Simplify right side
   3,907,872x = 67,825,897,979,904
5. Step 5: Solve for x
   x = 67,825,897,979,904/3,907,872
6. Step 6: Final answer
   x = 17,356,223.02