Finding the Third Proportional to 718,578 and 1,556,766

Step by Step Solution

1. Step 1: Write the proportion equation
   718,578 : 1,556,766 = 1,556,766 : x
2. Step 2: Convert to fraction form
   718,578/1,556,766 = 1,556,766/x
3. Step 3: Cross multiply
   718,578x = 1,556,766 × 1,556,766
4. Step 4: Simplify right side
   718,578x = 2,423,520,378,756
5. Step 5: Solve for x
   x = 2,423,520,378,756/718,578
6. Step 6: Final answer
   x = 3,372,661.53