Finding the Third Proportional to 2,586,436 and 5,620,552

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,436 : 5,620,552 = 5,620,552 : x
2. Step 2: Convert to fraction form
   2,586,436/5,620,552 = 5,620,552/x
3. Step 3: Cross multiply
   2,586,436x = 5,620,552 × 5,620,552
4. Step 4: Simplify right side
   2,586,436x = 31,590,604,784,704
5. Step 5: Solve for x
   x = 31,590,604,784,704/2,586,436
6. Step 6: Final answer
   x = 12,213,951.86