Finding the Third Proportional to 4,065,812 and 5,420,340

Step by Step Solution

1. Step 1: Write the proportion equation
   4,065,812 : 5,420,340 = 5,420,340 : x
2. Step 2: Convert to fraction form
   4,065,812/5,420,340 = 5,420,340/x
3. Step 3: Cross multiply
   4,065,812x = 5,420,340 × 5,420,340
4. Step 4: Simplify right side
   4,065,812x = 29,380,085,715,600
5. Step 5: Solve for x
   x = 29,380,085,715,600/4,065,812
6. Step 6: Final answer
   x = 7,226,129.91