Finding the Third Proportional to 171,112.50 and 381,591

Step by Step Solution

1. Step 1: Write the proportion equation
   171,112.50 : 381,591 = 381,591 : x
2. Step 2: Convert to fraction form
   171,112.50/381,591 = 381,591/x
3. Step 3: Cross multiply
   171,112.50x = 381,591 × 381,591
4. Step 4: Simplify right side
   171,112.50x = 145,611,691,281
5. Step 5: Solve for x
   x = 145,611,691,281/171,112.50
6. Step 6: Final answer
   x = 850,970.51