Finding the Third Proportional to 3,645,634 and 7,977,824

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,634 : 7,977,824 = 7,977,824 : x
2. Step 2: Convert to fraction form
   3,645,634/7,977,824 = 7,977,824/x
3. Step 3: Cross multiply
   3,645,634x = 7,977,824 × 7,977,824
4. Step 4: Simplify right side
   3,645,634x = 63,645,675,774,976
5. Step 5: Solve for x
   x = 63,645,675,774,976/3,645,634
6. Step 6: Final answer
   x = 17,458,054.15