Finding the Third Proportional to 111,392 and 247,630

Step by Step Solution

1. Step 1: Write the proportion equation
   111,392 : 247,630 = 247,630 : x
2. Step 2: Convert to fraction form
   111,392/247,630 = 247,630/x
3. Step 3: Cross multiply
   111,392x = 247,630 × 247,630
4. Step 4: Simplify right side
   111,392x = 61,320,616,900
5. Step 5: Solve for x
   x = 61,320,616,900/111,392
6. Step 6: Final answer
   x = 550,493.90