Finding the Third Proportional to 111,996 and 173,430

Step by Step Solution

1. Step 1: Write the proportion equation
   111,996 : 173,430 = 173,430 : x
2. Step 2: Convert to fraction form
   111,996/173,430 = 173,430/x
3. Step 3: Cross multiply
   111,996x = 173,430 × 173,430
4. Step 4: Simplify right side
   111,996x = 30,077,964,900
5. Step 5: Solve for x
   x = 30,077,964,900/111,996
6. Step 6: Final answer
   x = 268,562.85