Finding the Third Proportional to 223,492 and 488,456

Step by Step Solution

1. Step 1: Write the proportion equation
   223,492 : 488,456 = 488,456 : x
2. Step 2: Convert to fraction form
   223,492/488,456 = 488,456/x
3. Step 3: Cross multiply
   223,492x = 488,456 × 488,456
4. Step 4: Simplify right side
   223,492x = 238,589,263,936
5. Step 5: Solve for x
   x = 238,589,263,936/223,492
6. Step 6: Final answer
   x = 1,067,551.70