Finding the Third Proportional to 222,966 and 490,212

Step by Step Solution

1. Step 1: Write the proportion equation
   222,966 : 490,212 = 490,212 : x
2. Step 2: Convert to fraction form
   222,966/490,212 = 490,212/x
3. Step 3: Cross multiply
   222,966x = 490,212 × 490,212
4. Step 4: Simplify right side
   222,966x = 240,307,804,944
5. Step 5: Solve for x
   x = 240,307,804,944/222,966
6. Step 6: Final answer
   x = 1,077,777.80