Finding the Third Proportional to 619,413 and 1,313,256

Step by Step Solution

1. Step 1: Write the proportion equation
   619,413 : 1,313,256 = 1,313,256 : x
2. Step 2: Convert to fraction form
   619,413/1,313,256 = 1,313,256/x
3. Step 3: Cross multiply
   619,413x = 1,313,256 × 1,313,256
4. Step 4: Simplify right side
   619,413x = 1,724,641,321,536
5. Step 5: Solve for x
   x = 1,724,641,321,536/619,413
6. Step 6: Final answer
   x = 2,784,315.67