Finding the Third Proportional to 715,416 and 1,555,078

Step by Step Solution

1. Step 1: Write the proportion equation
   715,416 : 1,555,078 = 1,555,078 : x
2. Step 2: Convert to fraction form
   715,416/1,555,078 = 1,555,078/x
3. Step 3: Cross multiply
   715,416x = 1,555,078 × 1,555,078
4. Step 4: Simplify right side
   715,416x = 2,418,267,586,084
5. Step 5: Solve for x
   x = 2,418,267,586,084/715,416
6. Step 6: Final answer
   x = 3,380,225.75