Finding the Third Proportional to 216,850 and 469,900

Step by Step Solution

1. Step 1: Write the proportion equation
   216,850 : 469,900 = 469,900 : x
2. Step 2: Convert to fraction form
   216,850/469,900 = 469,900/x
3. Step 3: Cross multiply
   216,850x = 469,900 × 469,900
4. Step 4: Simplify right side
   216,850x = 220,806,010,000
5. Step 5: Solve for x
   x = 220,806,010,000/216,850
6. Step 6: Final answer
   x = 1,018,243.07