Finding the Third Proportional to 3,645,558 and 7,977,339

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,558 : 7,977,339 = 7,977,339 : x
2. Step 2: Convert to fraction form
   3,645,558/7,977,339 = 7,977,339/x
3. Step 3: Cross multiply
   3,645,558x = 7,977,339 × 7,977,339
4. Step 4: Simplify right side
   3,645,558x = 63,637,937,520,921
5. Step 5: Solve for x
   x = 63,637,937,520,921/3,645,558
6. Step 6: Final answer
   x = 17,456,295.45