Finding the Third Proportional to 2,586,223 and 5,620,099

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,223 : 5,620,099 = 5,620,099 : x
2. Step 2: Convert to fraction form
   2,586,223/5,620,099 = 5,620,099/x
3. Step 3: Cross multiply
   2,586,223x = 5,620,099 × 5,620,099
4. Step 4: Simplify right side
   2,586,223x = 31,585,512,769,801
5. Step 5: Solve for x
   x = 31,585,512,769,801/2,586,223
6. Step 6: Final answer
   x = 12,212,988.89