Finding the Third Proportional to 3,638,166 and 7,921,779

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638,166 : 7,921,779 = 7,921,779 : x
2. Step 2: Convert to fraction form
   3,638,166/7,921,779 = 7,921,779/x
3. Step 3: Cross multiply
   3,638,166x = 7,921,779 × 7,921,779
4. Step 4: Simplify right side
   3,638,166x = 62,754,582,524,841
5. Step 5: Solve for x
   x = 62,754,582,524,841/3,638,166
6. Step 6: Final answer
   x = 17,248,960.75