Finding the Third Proportional to 998,644 and 2,137,256

Step by Step Solution

1. Step 1: Write the proportion equation
   998,644 : 2,137,256 = 2,137,256 : x
2. Step 2: Convert to fraction form
   998,644/2,137,256 = 2,137,256/x
3. Step 3: Cross multiply
   998,644x = 2,137,256 × 2,137,256
4. Step 4: Simplify right side
   998,644x = 4,567,863,209,536
5. Step 5: Solve for x
   x = 4,567,863,209,536/998,644
6. Step 6: Final answer
   x = 4,574,065.64