Finding the Third Proportional to 196,378.31 and 300,274.31

Step by Step Solution

1. Step 1: Write the proportion equation
   196,378.31 : 300,274.31 = 300,274.31 : x
2. Step 2: Convert to fraction form
   196,378.31/300,274.31 = 300,274.31/x
3. Step 3: Cross multiply
   196,378.31x = 300,274.31 × 300,274.31
4. Step 4: Simplify right side
   196,378.31x = 90,164,662,747.35
5. Step 5: Solve for x
   x = 90,164,662,747.35/196,378.31
6. Step 6: Final answer
   x = 459,137.58