Finding the Third Proportional to 3,663,708 and 7,831,608

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663,708 : 7,831,608 = 7,831,608 : x
2. Step 2: Convert to fraction form
   3,663,708/7,831,608 = 7,831,608/x
3. Step 3: Cross multiply
   3,663,708x = 7,831,608 × 7,831,608
4. Step 4: Simplify right side
   3,663,708x = 61,334,083,865,664
5. Step 5: Solve for x
   x = 61,334,083,865,664/3,663,708
6. Step 6: Final answer
   x = 16,740,985.87