Finding the Third Proportional to 145,287 and 307,885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,287 : 307,885.50 = 307,885.50 : x
2. Step 2: Convert to fraction form
   145,287/307,885.50 = 307,885.50/x
3. Step 3: Cross multiply
   145,287x = 307,885.50 × 307,885.50
4. Step 4: Simplify right side
   145,287x = 94,793,481,110.25
5. Step 5: Solve for x
   x = 94,793,481,110.25/145,287
6. Step 6: Final answer
   x = 652,456.73