Finding the Third Proportional to 181,638 and 395,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   181,638 : 395,971.50 = 395,971.50 : x
2. Step 2: Convert to fraction form
   181,638/395,971.50 = 395,971.50/x
3. Step 3: Cross multiply
   181,638x = 395,971.50 × 395,971.50
4. Step 4: Simplify right side
   181,638x = 156,793,428,812.25
5. Step 5: Solve for x
   x = 156,793,428,812.25/181,638
6. Step 6: Final answer
   x = 863,219.31