Finding the Third Proportional to 216,882 and 333,778

Step by Step Solution

1. Step 1: Write the proportion equation
   216,882 : 333,778 = 333,778 : x
2. Step 2: Convert to fraction form
   216,882/333,778 = 333,778/x
3. Step 3: Cross multiply
   216,882x = 333,778 × 333,778
4. Step 4: Simplify right side
   216,882x = 111,407,753,284
5. Step 5: Solve for x
   x = 111,407,753,284/216,882
6. Step 6: Final answer
   x = 513,679.11