Finding the Third Proportional to 1,187,435 and 2,315,455

Step by Step Solution

1. Step 1: Write the proportion equation
   1,187,435 : 2,315,455 = 2,315,455 : x
2. Step 2: Convert to fraction form
   1,187,435/2,315,455 = 2,315,455/x
3. Step 3: Cross multiply
   1,187,435x = 2,315,455 × 2,315,455
4. Step 4: Simplify right side
   1,187,435x = 5,361,331,857,025
5. Step 5: Solve for x
   x = 5,361,331,857,025/1,187,435
6. Step 6: Final answer
   x = 4,515,052.91