Finding the Third Proportional to 557,974 and 1,215,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   557,974 : 1,215,591.50 = 1,215,591.50 : x
2. Step 2: Convert to fraction form
   557,974/1,215,591.50 = 1,215,591.50/x
3. Step 3: Cross multiply
   557,974x = 1,215,591.50 × 1,215,591.50
4. Step 4: Simplify right side
   557,974x = 1,477,662,694,872.25
5. Step 5: Solve for x
   x = 1,477,662,694,872.25/557,974
6. Step 6: Final answer
   x = 2,648,264.43