Finding the Third Proportional to 816,216 and 1,772,217

Step by Step Solution

1. Step 1: Write the proportion equation
   816,216 : 1,772,217 = 1,772,217 : x
2. Step 2: Convert to fraction form
   816,216/1,772,217 = 1,772,217/x
3. Step 3: Cross multiply
   816,216x = 1,772,217 × 1,772,217
4. Step 4: Simplify right side
   816,216x = 3,140,753,095,089
5. Step 5: Solve for x
   x = 3,140,753,095,089/816,216
6. Step 6: Final answer
   x = 3,847,943.55