Finding the Third Proportional to 3,880,619 and 8,163,416

Step by Step Solution

1. Step 1: Write the proportion equation
   3,880,619 : 8,163,416 = 8,163,416 : x
2. Step 2: Convert to fraction form
   3,880,619/8,163,416 = 8,163,416/x
3. Step 3: Cross multiply
   3,880,619x = 8,163,416 × 8,163,416
4. Step 4: Simplify right side
   3,880,619x = 66,641,360,789,056
5. Step 5: Solve for x
   x = 66,641,360,789,056/3,880,619
6. Step 6: Final answer
   x = 17,172,868.76