Finding the Third Proportional to 2,489,339 and 5,431,072

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489,339 : 5,431,072 = 5,431,072 : x
2. Step 2: Convert to fraction form
   2,489,339/5,431,072 = 5,431,072/x
3. Step 3: Cross multiply
   2,489,339x = 5,431,072 × 5,431,072
4. Step 4: Simplify right side
   2,489,339x = 29,496,543,069,184
5. Step 5: Solve for x
   x = 29,496,543,069,184/2,489,339
6. Step 6: Final answer
   x = 11,849,146.73