Finding the Third Proportional to 507,666 and 673,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   507,666 : 673,879.50 = 673,879.50 : x
2. Step 2: Convert to fraction form
   507,666/673,879.50 = 673,879.50/x
3. Step 3: Cross multiply
   507,666x = 673,879.50 × 673,879.50
4. Step 4: Simplify right side
   507,666x = 454,113,580,520.25
5. Step 5: Solve for x
   x = 454,113,580,520.25/507,666
6. Step 6: Final answer
   x = 894,512.50