Finding the Third Proportional to 3,736,856 and 8,171,680

Step by Step Solution

1. Step 1: Write the proportion equation
   3,736,856 : 8,171,680 = 8,171,680 : x
2. Step 2: Convert to fraction form
   3,736,856/8,171,680 = 8,171,680/x
3. Step 3: Cross multiply
   3,736,856x = 8,171,680 × 8,171,680
4. Step 4: Simplify right side
   3,736,856x = 66,776,354,022,400
5. Step 5: Solve for x
   x = 66,776,354,022,400/3,736,856
6. Step 6: Final answer
   x = 17,869,662.10