Finding the Third Proportional to 4,430,616 and 6,638,556

Step by Step Solution

1. Step 1: Write the proportion equation
   4,430,616 : 6,638,556 = 6,638,556 : x
2. Step 2: Convert to fraction form
   4,430,616/6,638,556 = 6,638,556/x
3. Step 3: Cross multiply
   4,430,616x = 6,638,556 × 6,638,556
4. Step 4: Simplify right side
   4,430,616x = 44,070,425,765,136
5. Step 5: Solve for x
   x = 44,070,425,765,136/4,430,616
6. Step 6: Final answer
   x = 9,946,794.25