Finding the Third Proportional to 101,240 and 222,320

Step by Step Solution

1. Step 1: Write the proportion equation
   101,240 : 222,320 = 222,320 : x
2. Step 2: Convert to fraction form
   101,240/222,320 = 222,320/x
3. Step 3: Cross multiply
   101,240x = 222,320 × 222,320
4. Step 4: Simplify right side
   101,240x = 49,426,182,400
5. Step 5: Solve for x
   x = 49,426,182,400/101,240
6. Step 6: Final answer
   x = 488,208.04