Finding the Third Proportional to 1,238,661 and 1,914,345

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,661 : 1,914,345 = 1,914,345 : x
2. Step 2: Convert to fraction form
   1,238,661/1,914,345 = 1,914,345/x
3. Step 3: Cross multiply
   1,238,661x = 1,914,345 × 1,914,345
4. Step 4: Simplify right side
   1,238,661x = 3,664,716,779,025
5. Step 5: Solve for x
   x = 3,664,716,779,025/1,238,661
6. Step 6: Final answer
   x = 2,958,611.58