Finding the Third Proportional to 988,860 and 2,158,938

Step by Step Solution

1. Step 1: Write the proportion equation
   988,860 : 2,158,938 = 2,158,938 : x
2. Step 2: Convert to fraction form
   988,860/2,158,938 = 2,158,938/x
3. Step 3: Cross multiply
   988,860x = 2,158,938 × 2,158,938
4. Step 4: Simplify right side
   988,860x = 4,661,013,287,844
5. Step 5: Solve for x
   x = 4,661,013,287,844/988,860
6. Step 6: Final answer
   x = 4,713,521.92