Finding the Third Proportional to 998,412 and 2,154,288

Step by Step Solution

1. Step 1: Write the proportion equation
   998,412 : 2,154,288 = 2,154,288 : x
2. Step 2: Convert to fraction form
   998,412/2,154,288 = 2,154,288/x
3. Step 3: Cross multiply
   998,412x = 2,154,288 × 2,154,288
4. Step 4: Simplify right side
   998,412x = 4,640,956,786,944
5. Step 5: Solve for x
   x = 4,640,956,786,944/998,412
6. Step 6: Final answer
   x = 4,648,338.35