Finding the Third Proportional to 2,390,400 and 5,143,296

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390,400 : 5,143,296 = 5,143,296 : x
2. Step 2: Convert to fraction form
   2,390,400/5,143,296 = 5,143,296/x
3. Step 3: Cross multiply
   2,390,400x = 5,143,296 × 5,143,296
4. Step 4: Simplify right side
   2,390,400x = 26,453,493,743,616
5. Step 5: Solve for x
   x = 26,453,493,743,616/2,390,400
6. Step 6: Final answer
   x = 11,066,555.28