Finding the Third Proportional to 122,820 and 195,300

Step by Step Solution

1. Step 1: Write the proportion equation
   122,820 : 195,300 = 195,300 : x
2. Step 2: Convert to fraction form
   122,820/195,300 = 195,300/x
3. Step 3: Cross multiply
   122,820x = 195,300 × 195,300
4. Step 4: Simplify right side
   122,820x = 38,142,090,000
5. Step 5: Solve for x
   x = 38,142,090,000/122,820
6. Step 6: Final answer
   x = 310,552.76