Finding the Third Proportional to 3,645,549 and 7,977,321

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,549 : 7,977,321 = 7,977,321 : x
2. Step 2: Convert to fraction form
   3,645,549/7,977,321 = 7,977,321/x
3. Step 3: Cross multiply
   3,645,549x = 7,977,321 × 7,977,321
4. Step 4: Simplify right side
   3,645,549x = 63,637,650,337,041
5. Step 5: Solve for x
   x = 63,637,650,337,041/3,645,549
6. Step 6: Final answer
   x = 17,456,259.77