Finding the Third Proportional to 1,238,679 and 1,914,399

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,679 : 1,914,399 = 1,914,399 : x
2. Step 2: Convert to fraction form
   1,238,679/1,914,399 = 1,914,399/x
3. Step 3: Cross multiply
   1,238,679x = 1,914,399 × 1,914,399
4. Step 4: Simplify right side
   1,238,679x = 3,664,923,531,201
5. Step 5: Solve for x
   x = 3,664,923,531,201/1,238,679
6. Step 6: Final answer
   x = 2,958,735.50