Finding the Third Proportional to 221,448 and 480,408

Step by Step Solution

1. Step 1: Write the proportion equation
   221,448 : 480,408 = 480,408 : x
2. Step 2: Convert to fraction form
   221,448/480,408 = 480,408/x
3. Step 3: Cross multiply
   221,448x = 480,408 × 480,408
4. Step 4: Simplify right side
   221,448x = 230,791,846,464
5. Step 5: Solve for x
   x = 230,791,846,464/221,448
6. Step 6: Final answer
   x = 1,042,194.31