Finding the Third Proportional to 111,624 and 245,358

Step by Step Solution

1. Step 1: Write the proportion equation
   111,624 : 245,358 = 245,358 : x
2. Step 2: Convert to fraction form
   111,624/245,358 = 245,358/x
3. Step 3: Cross multiply
   111,624x = 245,358 × 245,358
4. Step 4: Simplify right side
   111,624x = 60,200,548,164
5. Step 5: Solve for x
   x = 60,200,548,164/111,624
6. Step 6: Final answer
   x = 539,315.45