Finding the Third Proportional to 3,663,198 and 7,977,222

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663,198 : 7,977,222 = 7,977,222 : x
2. Step 2: Convert to fraction form
   3,663,198/7,977,222 = 7,977,222/x
3. Step 3: Cross multiply
   3,663,198x = 7,977,222 × 7,977,222
4. Step 4: Simplify right side
   3,663,198x = 63,636,070,837,284
5. Step 5: Solve for x
   x = 63,636,070,837,284/3,663,198
6. Step 6: Final answer
   x = 17,371,725.70