Finding the Third Proportional to 140,238 and 308,522

Step by Step Solution

1. Step 1: Write the proportion equation
   140,238 : 308,522 = 308,522 : x
2. Step 2: Convert to fraction form
   140,238/308,522 = 308,522/x
3. Step 3: Cross multiply
   140,238x = 308,522 × 308,522
4. Step 4: Simplify right side
   140,238x = 95,185,824,484
5. Step 5: Solve for x
   x = 95,185,824,484/140,238
6. Step 6: Final answer
   x = 678,744.88