Finding the Third Proportional to 143,370 and 308,934

Step by Step Solution

1. Step 1: Write the proportion equation
   143,370 : 308,934 = 308,934 : x
2. Step 2: Convert to fraction form
   143,370/308,934 = 308,934/x
3. Step 3: Cross multiply
   143,370x = 308,934 × 308,934
4. Step 4: Simplify right side
   143,370x = 95,440,216,356
5. Step 5: Solve for x
   x = 95,440,216,356/143,370
6. Step 6: Final answer
   x = 665,691.68