Finding the Third Proportional to 405,756 and 867,793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,756 : 867,793.50 = 867,793.50 : x
2. Step 2: Convert to fraction form
   405,756/867,793.50 = 867,793.50/x
3. Step 3: Cross multiply
   405,756x = 867,793.50 × 867,793.50
4. Step 4: Simplify right side
   405,756x = 753,065,558,642.25
5. Step 5: Solve for x
   x = 753,065,558,642.25/405,756
6. Step 6: Final answer
   x = 1,855,956.68