Finding the Third Proportional to 5,678,612 and 12,384,912

Step by Step Solution

1. Step 1: Write the proportion equation
   5,678,612 : 12,384,912 = 12,384,912 : x
2. Step 2: Convert to fraction form
   5,678,612/12,384,912 = 12,384,912/x
3. Step 3: Cross multiply
   5,678,612x = 12,384,912 × 12,384,912
4. Step 4: Simplify right side
   5,678,612x = 153,386,045,247,744
5. Step 5: Solve for x
   x = 153,386,045,247,744/5,678,612
6. Step 6: Final answer
   x = 27,011,186.05