Finding the Third Proportional to 160,978 and 249,144

Step by Step Solution

1. Step 1: Write the proportion equation
   160,978 : 249,144 = 249,144 : x
2. Step 2: Convert to fraction form
   160,978/249,144 = 249,144/x
3. Step 3: Cross multiply
   160,978x = 249,144 × 249,144
4. Step 4: Simplify right side
   160,978x = 62,072,732,736
5. Step 5: Solve for x
   x = 62,072,732,736/160,978
6. Step 6: Final answer
   x = 385,597.61