Finding the Third Proportional to 317,267 and 467,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,267 : 467,128.50 = 467,128.50 : x
2. Step 2: Convert to fraction form
   317,267/467,128.50 = 467,128.50/x
3. Step 3: Cross multiply
   317,267x = 467,128.50 × 467,128.50
4. Step 4: Simplify right side
   317,267x = 218,209,035,512.25
5. Step 5: Solve for x
   x = 218,209,035,512.25/317,267
6. Step 6: Final answer
   x = 687,777.28