Finding the Third Proportional to 1,212,192 and 1,818,288

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,192 : 1,818,288 = 1,818,288 : x
2. Step 2: Convert to fraction form
   1,212,192/1,818,288 = 1,818,288/x
3. Step 3: Cross multiply
   1,212,192x = 1,818,288 × 1,818,288
4. Step 4: Simplify right side
   1,212,192x = 3,306,171,250,944
5. Step 5: Solve for x
   x = 3,306,171,250,944/1,212,192
6. Step 6: Final answer
   x = 2,727,432