Finding the Third Proportional to 2,786,428.75 and 3,923,906

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786,428.75 : 3,923,906 = 3,923,906 : x
2. Step 2: Convert to fraction form
   2,786,428.75/3,923,906 = 3,923,906/x
3. Step 3: Cross multiply
   2,786,428.75x = 3,923,906 × 3,923,906
4. Step 4: Simplify right side
   2,786,428.75x = 15,397,038,296,836
5. Step 5: Solve for x
   x = 15,397,038,296,836/2,786,428.75
6. Step 6: Final answer
   x = 5,525,724.75