Finding the Third Proportional to 145,600.50 and 318,144

Step by Step Solution

1. Step 1: Write the proportion equation
   145,600.50 : 318,144 = 318,144 : x
2. Step 2: Convert to fraction form
   145,600.50/318,144 = 318,144/x
3. Step 3: Cross multiply
   145,600.50x = 318,144 × 318,144
4. Step 4: Simplify right side
   145,600.50x = 101,215,604,736
5. Step 5: Solve for x
   x = 101,215,604,736/145,600.50
6. Step 6: Final answer
   x = 695,159.73