Finding the Third Proportional to 1,378,858 and 2,140,463

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,858 : 2,140,463 = 2,140,463 : x
2. Step 2: Convert to fraction form
   1,378,858/2,140,463 = 2,140,463/x
3. Step 3: Cross multiply
   1,378,858x = 2,140,463 × 2,140,463
4. Step 4: Simplify right side
   1,378,858x = 4,581,581,854,369
5. Step 5: Solve for x
   x = 4,581,581,854,369/1,378,858
6. Step 6: Final answer
   x = 3,322,736.54