Finding the Third Proportional to 4,487,636 and 9,659,560

Step by Step Solution

1. Step 1: Write the proportion equation
   4,487,636 : 9,659,560 = 9,659,560 : x
2. Step 2: Convert to fraction form
   4,487,636/9,659,560 = 9,659,560/x
3. Step 3: Cross multiply
   4,487,636x = 9,659,560 × 9,659,560
4. Step 4: Simplify right side
   4,487,636x = 93,307,099,393,600
5. Step 5: Solve for x
   x = 93,307,099,393,600/4,487,636
6. Step 6: Final answer
   x = 20,792,038.26