Finding the Third Proportional to 221,330 and 480,190

Step by Step Solution

1. Step 1: Write the proportion equation
   221,330 : 480,190 = 480,190 : x
2. Step 2: Convert to fraction form
   221,330/480,190 = 480,190/x
3. Step 3: Cross multiply
   221,330x = 480,190 × 480,190
4. Step 4: Simplify right side
   221,330x = 230,582,436,100
5. Step 5: Solve for x
   x = 230,582,436,100/221,330
6. Step 6: Final answer
   x = 1,041,803.80