Finding the Third Proportional to 112,772 and 248,870

Step by Step Solution

1. Step 1: Write the proportion equation
   112,772 : 248,870 = 248,870 : x
2. Step 2: Convert to fraction form
   112,772/248,870 = 248,870/x
3. Step 3: Cross multiply
   112,772x = 248,870 × 248,870
4. Step 4: Simplify right side
   112,772x = 61,936,276,900
5. Step 5: Solve for x
   x = 61,936,276,900/112,772
6. Step 6: Final answer
   x = 549,216.80