Finding the Third Proportional to 4,065,861 and 5,420,427

Step by Step Solution

1. Step 1: Write the proportion equation
   4,065,861 : 5,420,427 = 5,420,427 : x
2. Step 2: Convert to fraction form
   4,065,861/5,420,427 = 5,420,427/x
3. Step 3: Cross multiply
   4,065,861x = 5,420,427 × 5,420,427
4. Step 4: Simplify right side
   4,065,861x = 29,381,028,862,329
5. Step 5: Solve for x
   x = 29,381,028,862,329/4,065,861
6. Step 6: Final answer
   x = 7,226,274.79