Finding the Third Proportional to 2,578,944 and 5,538,402

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,944 : 5,538,402 = 5,538,402 : x
2. Step 2: Convert to fraction form
   2,578,944/5,538,402 = 5,538,402/x
3. Step 3: Cross multiply
   2,578,944x = 5,538,402 × 5,538,402
4. Step 4: Simplify right side
   2,578,944x = 30,673,896,713,604
5. Step 5: Solve for x
   x = 30,673,896,713,604/2,578,944
6. Step 6: Final answer
   x = 11,893,975.49