Finding the Third Proportional to 2,553,203 and 5,509,885

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553,203 : 5,509,885 = 5,509,885 : x
2. Step 2: Convert to fraction form
   2,553,203/5,509,885 = 5,509,885/x
3. Step 3: Cross multiply
   2,553,203x = 5,509,885 × 5,509,885
4. Step 4: Simplify right side
   2,553,203x = 30,358,832,713,225
5. Step 5: Solve for x
   x = 30,358,832,713,225/2,553,203
6. Step 6: Final answer
   x = 11,890,489.21