Finding the Third Proportional to 5,431,851 and 11,309,499

Step by Step Solution

1. Step 1: Write the proportion equation
   5,431,851 : 11,309,499 = 11,309,499 : x
2. Step 2: Convert to fraction form
   5,431,851/11,309,499 = 11,309,499/x
3. Step 3: Cross multiply
   5,431,851x = 11,309,499 × 11,309,499
4. Step 4: Simplify right side
   5,431,851x = 127,904,767,631,001
5. Step 5: Solve for x
   x = 127,904,767,631,001/5,431,851
6. Step 6: Final answer
   x = 23,547,178.97