Finding the Third Proportional to 998,898 and 2,157,406

Step by Step Solution

1. Step 1: Write the proportion equation
   998,898 : 2,157,406 = 2,157,406 : x
2. Step 2: Convert to fraction form
   998,898/2,157,406 = 2,157,406/x
3. Step 3: Cross multiply
   998,898x = 2,157,406 × 2,157,406
4. Step 4: Simplify right side
   998,898x = 4,654,400,648,836
5. Step 5: Solve for x
   x = 4,654,400,648,836/998,898
6. Step 6: Final answer
   x = 4,659,535.46