Finding the Third Proportional to 3,860,703 and 8,393,706

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860,703 : 8,393,706 = 8,393,706 : x
2. Step 2: Convert to fraction form
   3,860,703/8,393,706 = 8,393,706/x
3. Step 3: Cross multiply
   3,860,703x = 8,393,706 × 8,393,706
4. Step 4: Simplify right side
   3,860,703x = 70,454,300,414,436
5. Step 5: Solve for x
   x = 70,454,300,414,436/3,860,703
6. Step 6: Final answer
   x = 18,249,085.83