Finding the Third Proportional to 3,645,594 and 7,977,420

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,594 : 7,977,420 = 7,977,420 : x
2. Step 2: Convert to fraction form
   3,645,594/7,977,420 = 7,977,420/x
3. Step 3: Cross multiply
   3,645,594x = 7,977,420 × 7,977,420
4. Step 4: Simplify right side
   3,645,594x = 63,639,229,856,400
5. Step 5: Solve for x
   x = 63,639,229,856,400/3,645,594
6. Step 6: Final answer
   x = 17,456,477.56