Finding the Third Proportional to 4,636,560 and 9,958,704

Step by Step Solution

1. Step 1: Write the proportion equation
   4,636,560 : 9,958,704 = 9,958,704 : x
2. Step 2: Convert to fraction form
   4,636,560/9,958,704 = 9,958,704/x
3. Step 3: Cross multiply
   4,636,560x = 9,958,704 × 9,958,704
4. Step 4: Simplify right side
   4,636,560x = 99,175,785,359,616
5. Step 5: Solve for x
   x = 99,175,785,359,616/4,636,560
6. Step 6: Final answer
   x = 21,389,949.74