Finding the Third Proportional to 221,328 and 480,186

Step by Step Solution

1. Step 1: Write the proportion equation
   221,328 : 480,186 = 480,186 : x
2. Step 2: Convert to fraction form
   221,328/480,186 = 480,186/x
3. Step 3: Cross multiply
   221,328x = 480,186 × 480,186
4. Step 4: Simplify right side
   221,328x = 230,578,594,596
5. Step 5: Solve for x
   x = 230,578,594,596/221,328
6. Step 6: Final answer
   x = 1,041,795.86