Finding the Third Proportional to 170,722.69 and 256,084.03

Step by Step Solution

1. Step 1: Write the proportion equation
   170,722.69 : 256,084.03 = 256,084.03 : x
2. Step 2: Convert to fraction form
   170,722.69/256,084.03 = 256,084.03/x
3. Step 3: Cross multiply
   170,722.69x = 256,084.03 × 256,084.03
4. Step 4: Simplify right side
   170,722.69x = 65,579,031,061.25
5. Step 5: Solve for x
   x = 65,579,031,061.25/170,722.69
6. Step 6: Final answer
   x = 384,126.05