Finding the Third Proportional to 178,476 and 276,353.50

Step by Step Solution

1. Step 1: Write the proportion equation
   178,476 : 276,353.50 = 276,353.50 : x
2. Step 2: Convert to fraction form
   178,476/276,353.50 = 276,353.50/x
3. Step 3: Cross multiply
   178,476x = 276,353.50 × 276,353.50
4. Step 4: Simplify right side
   178,476x = 76,371,256,962.25
5. Step 5: Solve for x
   x = 76,371,256,962.25/178,476
6. Step 6: Final answer
   x = 427,907.71