Finding the Third Proportional to 178,491.50 and 375,390

Step by Step Solution

1. Step 1: Write the proportion equation
   178,491.50 : 375,390 = 375,390 : x
2. Step 2: Convert to fraction form
   178,491.50/375,390 = 375,390/x
3. Step 3: Cross multiply
   178,491.50x = 375,390 × 375,390
4. Step 4: Simplify right side
   178,491.50x = 140,917,652,100
5. Step 5: Solve for x
   x = 140,917,652,100/178,491.50
6. Step 6: Final answer
   x = 789,492.23