Finding the Third Proportional to 221,524 and 480,440

Step by Step Solution

1. Step 1: Write the proportion equation
   221,524 : 480,440 = 480,440 : x
2. Step 2: Convert to fraction form
   221,524/480,440 = 480,440/x
3. Step 3: Cross multiply
   221,524x = 480,440 × 480,440
4. Step 4: Simplify right side
   221,524x = 230,822,593,600
5. Step 5: Solve for x
   x = 230,822,593,600/221,524
6. Step 6: Final answer
   x = 1,041,975.56