Finding the Third Proportional to 2,581,640 and 5,611,048

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581,640 : 5,611,048 = 5,611,048 : x
2. Step 2: Convert to fraction form
   2,581,640/5,611,048 = 5,611,048/x
3. Step 3: Cross multiply
   2,581,640x = 5,611,048 × 5,611,048
4. Step 4: Simplify right side
   2,581,640x = 31,483,859,658,304
5. Step 5: Solve for x
   x = 31,483,859,658,304/2,581,640
6. Step 6: Final answer
   x = 12,195,294.33