Finding the Third Proportional to 619,724 and 1,313,860

Step by Step Solution

1. Step 1: Write the proportion equation
   619,724 : 1,313,860 = 1,313,860 : x
2. Step 2: Convert to fraction form
   619,724/1,313,860 = 1,313,860/x
3. Step 3: Cross multiply
   619,724x = 1,313,860 × 1,313,860
4. Step 4: Simplify right side
   619,724x = 1,726,228,099,600
5. Step 5: Solve for x
   x = 1,726,228,099,600/619,724
6. Step 6: Final answer
   x = 2,785,478.86