Finding the Third Proportional to 861,123 and 1,886,406

Step by Step Solution

1. Step 1: Write the proportion equation
   861,123 : 1,886,406 = 1,886,406 : x
2. Step 2: Convert to fraction form
   861,123/1,886,406 = 1,886,406/x
3. Step 3: Cross multiply
   861,123x = 1,886,406 × 1,886,406
4. Step 4: Simplify right side
   861,123x = 3,558,527,596,836
5. Step 5: Solve for x
   x = 3,558,527,596,836/861,123
6. Step 6: Final answer
   x = 4,132,426.61