Finding the Third Proportional to 223,490 and 488,452

Step by Step Solution

1. Step 1: Write the proportion equation
   223,490 : 488,452 = 488,452 : x
2. Step 2: Convert to fraction form
   223,490/488,452 = 488,452/x
3. Step 3: Cross multiply
   223,490x = 488,452 × 488,452
4. Step 4: Simplify right side
   223,490x = 238,585,356,304
5. Step 5: Solve for x
   x = 238,585,356,304/223,490
6. Step 6: Final answer
   x = 1,067,543.77