Finding the Third Proportional to 155,028.50 and 219,426

Step by Step Solution

1. Step 1: Write the proportion equation
   155,028.50 : 219,426 = 219,426 : x
2. Step 2: Convert to fraction form
   155,028.50/219,426 = 219,426/x
3. Step 3: Cross multiply
   155,028.50x = 219,426 × 219,426
4. Step 4: Simplify right side
   155,028.50x = 48,147,769,476
5. Step 5: Solve for x
   x = 48,147,769,476/155,028.50
6. Step 6: Final answer
   x = 310,573.67