Finding the Third Proportional to 122,820 and 195,301.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,820 : 195,301.50 = 195,301.50 : x
2. Step 2: Convert to fraction form
   122,820/195,301.50 = 195,301.50/x
3. Step 3: Cross multiply
   122,820x = 195,301.50 × 195,301.50
4. Step 4: Simplify right side
   122,820x = 38,142,675,902.25
5. Step 5: Solve for x
   x = 38,142,675,902.25/122,820
6. Step 6: Final answer
   x = 310,557.53