Finding the Third Proportional to 988,890 and 2,099,172

Step by Step Solution

1. Step 1: Write the proportion equation
   988,890 : 2,099,172 = 2,099,172 : x
2. Step 2: Convert to fraction form
   988,890/2,099,172 = 2,099,172/x
3. Step 3: Cross multiply
   988,890x = 2,099,172 × 2,099,172
4. Step 4: Simplify right side
   988,890x = 4,406,523,085,584
5. Step 5: Solve for x
   x = 4,406,523,085,584/988,890
6. Step 6: Final answer
   x = 4,456,029.57