Finding the Third Proportional to 122,116.50 and 155,229

Step by Step Solution

1. Step 1: Write the proportion equation
   122,116.50 : 155,229 = 155,229 : x
2. Step 2: Convert to fraction form
   122,116.50/155,229 = 155,229/x
3. Step 3: Cross multiply
   122,116.50x = 155,229 × 155,229
4. Step 4: Simplify right side
   122,116.50x = 24,096,042,441
5. Step 5: Solve for x
   x = 24,096,042,441/122,116.50
6. Step 6: Final answer
   x = 197,320.12