Finding the Third Proportional to 2,556,472 and 4,069,820

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556,472 : 4,069,820 = 4,069,820 : x
2. Step 2: Convert to fraction form
   2,556,472/4,069,820 = 4,069,820/x
3. Step 3: Cross multiply
   2,556,472x = 4,069,820 × 4,069,820
4. Step 4: Simplify right side
   2,556,472x = 16,563,434,832,400
5. Step 5: Solve for x
   x = 16,563,434,832,400/2,556,472
6. Step 6: Final answer
   x = 6,479,020.63