Finding the Third Proportional to 155,961.50 and 222,860

Step by Step Solution

1. Step 1: Write the proportion equation
   155,961.50 : 222,860 = 222,860 : x
2. Step 2: Convert to fraction form
   155,961.50/222,860 = 222,860/x
3. Step 3: Cross multiply
   155,961.50x = 222,860 × 222,860
4. Step 4: Simplify right side
   155,961.50x = 49,666,579,600
5. Step 5: Solve for x
   x = 49,666,579,600/155,961.50
6. Step 6: Final answer
   x = 318,454.10