Finding the Third Proportional to 818,301 and 1,778,245

Step by Step Solution

1. Step 1: Write the proportion equation
   818,301 : 1,778,245 = 1,778,245 : x
2. Step 2: Convert to fraction form
   818,301/1,778,245 = 1,778,245/x
3. Step 3: Cross multiply
   818,301x = 1,778,245 × 1,778,245
4. Step 4: Simplify right side
   818,301x = 3,162,155,280,025
5. Step 5: Solve for x
   x = 3,162,155,280,025/818,301
6. Step 6: Final answer
   x = 3,864,293.55