Finding the Third Proportional to 111,917 and 245,886

Step by Step Solution

1. Step 1: Write the proportion equation
   111,917 : 245,886 = 245,886 : x
2. Step 2: Convert to fraction form
   111,917/245,886 = 245,886/x
3. Step 3: Cross multiply
   111,917x = 245,886 × 245,886
4. Step 4: Simplify right side
   111,917x = 60,459,924,996
5. Step 5: Solve for x
   x = 60,459,924,996/111,917
6. Step 6: Final answer
   x = 540,221.10