Finding the Third Proportional to 111,558 and 156,393

Step by Step Solution

1. Step 1: Write the proportion equation
   111,558 : 156,393 = 156,393 : x
2. Step 2: Convert to fraction form
   111,558/156,393 = 156,393/x
3. Step 3: Cross multiply
   111,558x = 156,393 × 156,393
4. Step 4: Simplify right side
   111,558x = 24,458,770,449
5. Step 5: Solve for x
   x = 24,458,770,449/111,558
6. Step 6: Final answer
   x = 219,247.12