Finding the Third Proportional to 3,638,166 and 7,921,778

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638,166 : 7,921,778 = 7,921,778 : x
2. Step 2: Convert to fraction form
   3,638,166/7,921,778 = 7,921,778/x
3. Step 3: Cross multiply
   3,638,166x = 7,921,778 × 7,921,778
4. Step 4: Simplify right side
   3,638,166x = 62,754,566,681,284
5. Step 5: Solve for x
   x = 62,754,566,681,284/3,638,166
6. Step 6: Final answer
   x = 17,248,956.39