Finding the Third Proportional to 222,272 and 486,320

Step by Step Solution

1. Step 1: Write the proportion equation
   222,272 : 486,320 = 486,320 : x
2. Step 2: Convert to fraction form
   222,272/486,320 = 486,320/x
3. Step 3: Cross multiply
   222,272x = 486,320 × 486,320
4. Step 4: Simplify right side
   222,272x = 236,507,142,400
5. Step 5: Solve for x
   x = 236,507,142,400/222,272
6. Step 6: Final answer
   x = 1,064,043.79