Finding the Third Proportional to 2,431,428 and 5,290,959

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431,428 : 5,290,959 = 5,290,959 : x
2. Step 2: Convert to fraction form
   2,431,428/5,290,959 = 5,290,959/x
3. Step 3: Cross multiply
   2,431,428x = 5,290,959 × 5,290,959
4. Step 4: Simplify right side
   2,431,428x = 27,994,247,139,681
5. Step 5: Solve for x
   x = 27,994,247,139,681/2,431,428
6. Step 6: Final answer
   x = 11,513,500.35