Finding the Third Proportional to 2,557,420 and 3,818,624

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557,420 : 3,818,624 = 3,818,624 : x
2. Step 2: Convert to fraction form
   2,557,420/3,818,624 = 3,818,624/x
3. Step 3: Cross multiply
   2,557,420x = 3,818,624 × 3,818,624
4. Step 4: Simplify right side
   2,557,420x = 14,581,889,253,376
5. Step 5: Solve for x
   x = 14,581,889,253,376/2,557,420
6. Step 6: Final answer
   x = 5,701,796.83