Finding the Third Proportional to 1,788,642 and 2,658,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788,642 : 2,658,636 = 2,658,636 : x
2. Step 2: Convert to fraction form
   1,788,642/2,658,636 = 2,658,636/x
3. Step 3: Cross multiply
   1,788,642x = 2,658,636 × 2,658,636
4. Step 4: Simplify right side
   1,788,642x = 7,068,345,380,496
5. Step 5: Solve for x
   x = 7,068,345,380,496/1,788,642
6. Step 6: Final answer
   x = 3,951,794.37