Finding the Third Proportional to 863,780 and 1,782,888

Step by Step Solution

1. Step 1: Write the proportion equation
   863,780 : 1,782,888 = 1,782,888 : x
2. Step 2: Convert to fraction form
   863,780/1,782,888 = 1,782,888/x
3. Step 3: Cross multiply
   863,780x = 1,782,888 × 1,782,888
4. Step 4: Simplify right side
   863,780x = 3,178,689,620,544
5. Step 5: Solve for x
   x = 3,178,689,620,544/863,780
6. Step 6: Final answer
   x = 3,679,975.94