Finding the Third Proportional to 2,431,339 and 5,290,789

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431,339 : 5,290,789 = 5,290,789 : x
2. Step 2: Convert to fraction form
   2,431,339/5,290,789 = 5,290,789/x
3. Step 3: Cross multiply
   2,431,339x = 5,290,789 × 5,290,789
4. Step 4: Simplify right side
   2,431,339x = 27,992,448,242,521
5. Step 5: Solve for x
   x = 27,992,448,242,521/2,431,339
6. Step 6: Final answer
   x = 11,513,181.93