Finding the Third Proportional to 221,886 and 485,244

Step by Step Solution

1. Step 1: Write the proportion equation
   221,886 : 485,244 = 485,244 : x
2. Step 2: Convert to fraction form
   221,886/485,244 = 485,244/x
3. Step 3: Cross multiply
   221,886x = 485,244 × 485,244
4. Step 4: Simplify right side
   221,886x = 235,461,739,536
5. Step 5: Solve for x
   x = 235,461,739,536/221,886
6. Step 6: Final answer
   x = 1,061,183.40