Finding the Third Proportional to 314,718 and 673,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   314,718 : 673,609.50 = 673,609.50 : x
2. Step 2: Convert to fraction form
   314,718/673,609.50 = 673,609.50/x
3. Step 3: Cross multiply
   314,718x = 673,609.50 × 673,609.50
4. Step 4: Simplify right side
   314,718x = 453,749,758,490.25
5. Step 5: Solve for x
   x = 453,749,758,490.25/314,718
6. Step 6: Final answer
   x = 1,441,766.15