Finding the Third Proportional to 2,553,192 and 5,509,863

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553,192 : 5,509,863 = 5,509,863 : x
2. Step 2: Convert to fraction form
   2,553,192/5,509,863 = 5,509,863/x
3. Step 3: Cross multiply
   2,553,192x = 5,509,863 × 5,509,863
4. Step 4: Simplify right side
   2,553,192x = 30,358,590,278,769
5. Step 5: Solve for x
   x = 30,358,590,278,769/2,553,192
6. Step 6: Final answer
   x = 11,890,445.48