Finding the Third Proportional to 219,090 and 471,390

Step by Step Solution

1. Step 1: Write the proportion equation
   219,090 : 471,390 = 471,390 : x
2. Step 2: Convert to fraction form
   219,090/471,390 = 471,390/x
3. Step 3: Cross multiply
   219,090x = 471,390 × 471,390
4. Step 4: Simplify right side
   219,090x = 222,208,532,100
5. Step 5: Solve for x
   x = 222,208,532,100/219,090
6. Step 6: Final answer
   x = 1,014,234.02