Finding the Third Proportional to 496,716 and 786,870

Step by Step Solution

1. Step 1: Write the proportion equation
   496,716 : 786,870 = 786,870 : x
2. Step 2: Convert to fraction form
   496,716/786,870 = 786,870/x
3. Step 3: Cross multiply
   496,716x = 786,870 × 786,870
4. Step 4: Simplify right side
   496,716x = 619,164,396,900
5. Step 5: Solve for x
   x = 619,164,396,900/496,716
6. Step 6: Final answer
   x = 1,246,515.91