Finding the Third Proportional to 3,655,173 and 7,920,519

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,173 : 7,920,519 = 7,920,519 : x
2. Step 2: Convert to fraction form
   3,655,173/7,920,519 = 7,920,519/x
3. Step 3: Cross multiply
   3,655,173x = 7,920,519 × 7,920,519
4. Step 4: Simplify right side
   3,655,173x = 62,734,621,229,361
5. Step 5: Solve for x
   x = 62,734,621,229,361/3,655,173
6. Step 6: Final answer
   x = 17,163,242.68