Finding the Third Proportional to 1,386,649 and 2,980,256

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,649 : 2,980,256 = 2,980,256 : x
2. Step 2: Convert to fraction form
   1,386,649/2,980,256 = 2,980,256/x
3. Step 3: Cross multiply
   1,386,649x = 2,980,256 × 2,980,256
4. Step 4: Simplify right side
   1,386,649x = 8,881,925,825,536
5. Step 5: Solve for x
   x = 8,881,925,825,536/1,386,649
6. Step 6: Final answer
   x = 6,405,316.58