Finding the Third Proportional to 2,545,911 and 5,490,402.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545,911 : 5,490,402.75 = 5,490,402.75 : x
2. Step 2: Convert to fraction form
   2,545,911/5,490,402.75 = 5,490,402.75/x
3. Step 3: Cross multiply
   2,545,911x = 5,490,402.75 × 5,490,402.75
4. Step 4: Simplify right side
   2,545,911x = 30,144,522,357,207.56
5. Step 5: Solve for x
   x = 30,144,522,357,207.56/2,545,911
6. Step 6: Final answer
   x = 11,840,367.69