Finding the Third Proportional to 155,017.50 and 222,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,017.50 : 222,145.50 = 222,145.50 : x
2. Step 2: Convert to fraction form
   155,017.50/222,145.50 = 222,145.50/x
3. Step 3: Cross multiply
   155,017.50x = 222,145.50 × 222,145.50
4. Step 4: Simplify right side
   155,017.50x = 49,348,623,170.25
5. Step 5: Solve for x
   x = 49,348,623,170.25/155,017.50
6. Step 6: Final answer
   x = 318,342.27