Finding the Third Proportional to 1,978,678 and 2,956,371

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,678 : 2,956,371 = 2,956,371 : x
2. Step 2: Convert to fraction form
   1,978,678/2,956,371 = 2,956,371/x
3. Step 3: Cross multiply
   1,978,678x = 2,956,371 × 2,956,371
4. Step 4: Simplify right side
   1,978,678x = 8,740,129,489,641
5. Step 5: Solve for x
   x = 8,740,129,489,641/1,978,678
6. Step 6: Final answer
   x = 4,417,156.05