Finding the Third Proportional to 707,856 and 1,555,680

Step by Step Solution

1. Step 1: Write the proportion equation
   707,856 : 1,555,680 = 1,555,680 : x
2. Step 2: Convert to fraction form
   707,856/1,555,680 = 1,555,680/x
3. Step 3: Cross multiply
   707,856x = 1,555,680 × 1,555,680
4. Step 4: Simplify right side
   707,856x = 2,420,140,262,400
5. Step 5: Solve for x
   x = 2,420,140,262,400/707,856
6. Step 6: Final answer
   x = 3,418,972.59