Finding the Third Proportional to 457,905 and 673,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   457,905 : 673,168.50 = 673,168.50 : x
2. Step 2: Convert to fraction form
   457,905/673,168.50 = 673,168.50/x
3. Step 3: Cross multiply
   457,905x = 673,168.50 × 673,168.50
4. Step 4: Simplify right side
   457,905x = 453,155,829,392.25
5. Step 5: Solve for x
   x = 453,155,829,392.25/457,905
6. Step 6: Final answer
   x = 989,628.48