Finding the Third Proportional to 818,322 and 1,778,280

Step by Step Solution

1. Step 1: Write the proportion equation
   818,322 : 1,778,280 = 1,778,280 : x
2. Step 2: Convert to fraction form
   818,322/1,778,280 = 1,778,280/x
3. Step 3: Cross multiply
   818,322x = 1,778,280 × 1,778,280
4. Step 4: Simplify right side
   818,322x = 3,162,279,758,400
5. Step 5: Solve for x
   x = 3,162,279,758,400/818,322
6. Step 6: Final answer
   x = 3,864,346.50