Finding the Third Proportional to 3,645,620 and 7,977,454

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,620 : 7,977,454 = 7,977,454 : x
2. Step 2: Convert to fraction form
   3,645,620/7,977,454 = 7,977,454/x
3. Step 3: Cross multiply
   3,645,620x = 7,977,454 × 7,977,454
4. Step 4: Simplify right side
   3,645,620x = 63,639,772,322,116
5. Step 5: Solve for x
   x = 63,639,772,322,116/3,645,620
6. Step 6: Final answer
   x = 17,456,501.86