Finding the Third Proportional to 2,489,358 and 5,431,110

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489,358 : 5,431,110 = 5,431,110 : x
2. Step 2: Convert to fraction form
   2,489,358/5,431,110 = 5,431,110/x
3. Step 3: Cross multiply
   2,489,358x = 5,431,110 × 5,431,110
4. Step 4: Simplify right side
   2,489,358x = 29,496,955,832,100
5. Step 5: Solve for x
   x = 29,496,955,832,100/2,489,358
6. Step 6: Final answer
   x = 11,849,222.10