Finding the Third Proportional to 3,908,135 and 8,484,706

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,135 : 8,484,706 = 8,484,706 : x
2. Step 2: Convert to fraction form
   3,908,135/8,484,706 = 8,484,706/x
3. Step 3: Cross multiply
   3,908,135x = 8,484,706 × 8,484,706
4. Step 4: Simplify right side
   3,908,135x = 71,990,235,906,436
5. Step 5: Solve for x
   x = 71,990,235,906,436/3,908,135
6. Step 6: Final answer
   x = 18,420,611.34