Finding the Third Proportional to 579,290 and 1,261,558

Step by Step Solution

1. Step 1: Write the proportion equation
   579,290 : 1,261,558 = 1,261,558 : x
2. Step 2: Convert to fraction form
   579,290/1,261,558 = 1,261,558/x
3. Step 3: Cross multiply
   579,290x = 1,261,558 × 1,261,558
4. Step 4: Simplify right side
   579,290x = 1,591,528,587,364
5. Step 5: Solve for x
   x = 1,591,528,587,364/579,290
6. Step 6: Final answer
   x = 2,747,377.98