Finding the Third Proportional to 2,678,418 and 5,780,240

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678,418 : 5,780,240 = 5,780,240 : x
2. Step 2: Convert to fraction form
   2,678,418/5,780,240 = 5,780,240/x
3. Step 3: Cross multiply
   2,678,418x = 5,780,240 × 5,780,240
4. Step 4: Simplify right side
   2,678,418x = 33,411,174,457,600
5. Step 5: Solve for x
   x = 33,411,174,457,600/2,678,418
6. Step 6: Final answer
   x = 12,474,219.65