Finding the Third Proportional to 359,928 and 558,756

Step by Step Solution

1. Step 1: Write the proportion equation
   359,928 : 558,756 = 558,756 : x
2. Step 2: Convert to fraction form
   359,928/558,756 = 558,756/x
3. Step 3: Cross multiply
   359,928x = 558,756 × 558,756
4. Step 4: Simplify right side
   359,928x = 312,208,267,536
5. Step 5: Solve for x
   x = 312,208,267,536/359,928
6. Step 6: Final answer
   x = 867,418.67