Finding the Third Proportional to 172,143 and 372,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,143 : 372,871.50 = 372,871.50 : x
2. Step 2: Convert to fraction form
   172,143/372,871.50 = 372,871.50/x
3. Step 3: Cross multiply
   172,143x = 372,871.50 × 372,871.50
4. Step 4: Simplify right side
   172,143x = 139,033,155,512.25
5. Step 5: Solve for x
   x = 139,033,155,512.25/172,143
6. Step 6: Final answer
   x = 807,660.81