Finding the Third Proportional to 1,217,920 and 2,567,136

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,920 : 2,567,136 = 2,567,136 : x
2. Step 2: Convert to fraction form
   1,217,920/2,567,136 = 2,567,136/x
3. Step 3: Cross multiply
   1,217,920x = 2,567,136 × 2,567,136
4. Step 4: Simplify right side
   1,217,920x = 6,590,187,242,496
5. Step 5: Solve for x
   x = 6,590,187,242,496/1,217,920
6. Step 6: Final answer
   x = 5,411,018.16