Finding the Third Proportional to 1,238,499 and 2,561,949

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,499 : 2,561,949 = 2,561,949 : x
2. Step 2: Convert to fraction form
   1,238,499/2,561,949 = 2,561,949/x
3. Step 3: Cross multiply
   1,238,499x = 2,561,949 × 2,561,949
4. Step 4: Simplify right side
   1,238,499x = 6,563,582,678,601
5. Step 5: Solve for x
   x = 6,563,582,678,601/1,238,499
6. Step 6: Final answer
   x = 5,299,626.95