Finding the Third Proportional to 313,317 and 456,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   313,317 : 456,574.50 = 456,574.50 : x
2. Step 2: Convert to fraction form
   313,317/456,574.50 = 456,574.50/x
3. Step 3: Cross multiply
   313,317x = 456,574.50 × 456,574.50
4. Step 4: Simplify right side
   313,317x = 208,460,274,050.25
5. Step 5: Solve for x
   x = 208,460,274,050.25/313,317
6. Step 6: Final answer
   x = 665,333.43