Finding the Third Proportional to 1,238,468 and 2,561,892

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,468 : 2,561,892 = 2,561,892 : x
2. Step 2: Convert to fraction form
   1,238,468/2,561,892 = 2,561,892/x
3. Step 3: Cross multiply
   1,238,468x = 2,561,892 × 2,561,892
4. Step 4: Simplify right side
   1,238,468x = 6,563,290,619,664
5. Step 5: Solve for x
   x = 6,563,290,619,664/1,238,468
6. Step 6: Final answer
   x = 5,299,523.78