Finding the Third Proportional to 222,286 and 485,396

Step by Step Solution

1. Step 1: Write the proportion equation
   222,286 : 485,396 = 485,396 : x
2. Step 2: Convert to fraction form
   222,286/485,396 = 485,396/x
3. Step 3: Cross multiply
   222,286x = 485,396 × 485,396
4. Step 4: Simplify right side
   222,286x = 235,609,276,816
5. Step 5: Solve for x
   x = 235,609,276,816/222,286
6. Step 6: Final answer
   x = 1,059,937.54