Finding the Third Proportional to 2,553,172.88 and 5,531,859

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553,172.88 : 5,531,859 = 5,531,859 : x
2. Step 2: Convert to fraction form
   2,553,172.88/5,531,859 = 5,531,859/x
3. Step 3: Cross multiply
   2,553,172.88x = 5,531,859 × 5,531,859
4. Step 4: Simplify right side
   2,553,172.88x = 30,601,463,995,881
5. Step 5: Solve for x
   x = 30,601,463,995,881/2,553,172.88
6. Step 6: Final answer
   x = 11,985,660.78