Finding the Third Proportional to 5,579,988 and 7,897,860

Step by Step Solution

1. Step 1: Write the proportion equation
   5,579,988 : 7,897,860 = 7,897,860 : x
2. Step 2: Convert to fraction form
   5,579,988/7,897,860 = 7,897,860/x
3. Step 3: Cross multiply
   5,579,988x = 7,897,860 × 7,897,860
4. Step 4: Simplify right side
   5,579,988x = 62,376,192,579,600
5. Step 5: Solve for x
   x = 62,376,192,579,600/5,579,988
6. Step 6: Final answer
   x = 11,178,553.18