Finding the Third Proportional to 3,644,638 and 7,975,720

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644,638 : 7,975,720 = 7,975,720 : x
2. Step 2: Convert to fraction form
   3,644,638/7,975,720 = 7,975,720/x
3. Step 3: Cross multiply
   3,644,638x = 7,975,720 × 7,975,720
4. Step 4: Simplify right side
   3,644,638x = 63,612,109,518,400
5. Step 5: Solve for x
   x = 63,612,109,518,400/3,644,638
6. Step 6: Final answer
   x = 17,453,615.29