Finding the Third Proportional to 78,371.50 and 171,323

Step by Step Solution

1. Step 1: Write the proportion equation
   78,371.50 : 171,323 = 171,323 : x
2. Step 2: Convert to fraction form
   78,371.50/171,323 = 171,323/x
3. Step 3: Cross multiply
   78,371.50x = 171,323 × 171,323
4. Step 4: Simplify right side
   78,371.50x = 29,351,570,329
5. Step 5: Solve for x
   x = 29,351,570,329/78,371.50
6. Step 6: Final answer
   x = 374,518.42