Finding the Third Proportional to 3,856,871 and 8,226,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856,871 : 8,226,320 = 8,226,320 : x
2. Step 2: Convert to fraction form
   3,856,871/8,226,320 = 8,226,320/x
3. Step 3: Cross multiply
   3,856,871x = 8,226,320 × 8,226,320
4. Step 4: Simplify right side
   3,856,871x = 67,672,340,742,400
5. Step 5: Solve for x
   x = 67,672,340,742,400/3,856,871
6. Step 6: Final answer
   x = 17,545,917.60