Finding the Third Proportional to 126,128 and 195,300

Step by Step Solution

1. Step 1: Write the proportion equation
   126,128 : 195,300 = 195,300 : x
2. Step 2: Convert to fraction form
   126,128/195,300 = 195,300/x
3. Step 3: Cross multiply
   126,128x = 195,300 × 195,300
4. Step 4: Simplify right side
   126,128x = 38,142,090,000
5. Step 5: Solve for x
   x = 38,142,090,000/126,128
6. Step 6: Final answer
   x = 302,407.79