Finding the Third Proportional to 866,556 and 1,870,123

Step by Step Solution

1. Step 1: Write the proportion equation
   866,556 : 1,870,123 = 1,870,123 : x
2. Step 2: Convert to fraction form
   866,556/1,870,123 = 1,870,123/x
3. Step 3: Cross multiply
   866,556x = 1,870,123 × 1,870,123
4. Step 4: Simplify right side
   866,556x = 3,497,360,035,129
5. Step 5: Solve for x
   x = 3,497,360,035,129/866,556
6. Step 6: Final answer
   x = 4,035,930.78