Finding the Third Proportional to 72,123 and 155,343

Step by Step Solution

1. Step 1: Write the proportion equation
   72,123 : 155,343 = 155,343 : x
2. Step 2: Convert to fraction form
   72,123/155,343 = 155,343/x
3. Step 3: Cross multiply
   72,123x = 155,343 × 155,343
4. Step 4: Simplify right side
   72,123x = 24,131,447,649
5. Step 5: Solve for x
   x = 24,131,447,649/72,123
6. Step 6: Final answer
   x = 334,587.41