Finding the Third Proportional to 196,128 and 300,510

Step by Step Solution

1. Step 1: Write the proportion equation
   196,128 : 300,510 = 300,510 : x
2. Step 2: Convert to fraction form
   196,128/300,510 = 300,510/x
3. Step 3: Cross multiply
   196,128x = 300,510 × 300,510
4. Step 4: Simplify right side
   196,128x = 90,306,260,100
5. Step 5: Solve for x
   x = 90,306,260,100/196,128
6. Step 6: Final answer
   x = 460,445.53