Finding the Third Proportional to 3,174,636 and 6,663,768

Step by Step Solution

1. Step 1: Write the proportion equation
   3,174,636 : 6,663,768 = 6,663,768 : x
2. Step 2: Convert to fraction form
   3,174,636/6,663,768 = 6,663,768/x
3. Step 3: Cross multiply
   3,174,636x = 6,663,768 × 6,663,768
4. Step 4: Simplify right side
   3,174,636x = 44,405,803,957,824
5. Step 5: Solve for x
   x = 44,405,803,957,824/3,174,636
6. Step 6: Final answer
   x = 13,987,683.61