Finding the Third Proportional to 5,579,970 and 7,897,830

Step by Step Solution

1. Step 1: Write the proportion equation
   5,579,970 : 7,897,830 = 7,897,830 : x
2. Step 2: Convert to fraction form
   5,579,970/7,897,830 = 7,897,830/x
3. Step 3: Cross multiply
   5,579,970x = 7,897,830 × 7,897,830
4. Step 4: Simplify right side
   5,579,970x = 62,375,718,708,900
5. Step 5: Solve for x
   x = 62,375,718,708,900/5,579,970
6. Step 6: Final answer
   x = 11,178,504.31