Finding the Third Proportional to 2,438,640 and 5,647,158

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438,640 : 5,647,158 = 5,647,158 : x
2. Step 2: Convert to fraction form
   2,438,640/5,647,158 = 5,647,158/x
3. Step 3: Cross multiply
   2,438,640x = 5,647,158 × 5,647,158
4. Step 4: Simplify right side
   2,438,640x = 31,890,393,476,964
5. Step 5: Solve for x
   x = 31,890,393,476,964/2,438,640
6. Step 6: Final answer
   x = 13,077,122.28