Finding the Third Proportional to 112,910 and 248,856

Step by Step Solution

1. Step 1: Write the proportion equation
   112,910 : 248,856 = 248,856 : x
2. Step 2: Convert to fraction form
   112,910/248,856 = 248,856/x
3. Step 3: Cross multiply
   112,910x = 248,856 × 248,856
4. Step 4: Simplify right side
   112,910x = 61,929,308,736
5. Step 5: Solve for x
   x = 61,929,308,736/112,910
6. Step 6: Final answer
   x = 548,483.83