Finding the Third Proportional to 3,880,629 and 8,163,436

Step by Step Solution

1. Step 1: Write the proportion equation
   3,880,629 : 8,163,436 = 8,163,436 : x
2. Step 2: Convert to fraction form
   3,880,629/8,163,436 = 8,163,436/x
3. Step 3: Cross multiply
   3,880,629x = 8,163,436 × 8,163,436
4. Step 4: Simplify right side
   3,880,629x = 66,641,687,326,096
5. Step 5: Solve for x
   x = 66,641,687,326,096/3,880,629
6. Step 6: Final answer
   x = 17,172,908.65