Finding the Third Proportional to 79,387.50 and 171,240

Step by Step Solution

1. Step 1: Write the proportion equation
   79,387.50 : 171,240 = 171,240 : x
2. Step 2: Convert to fraction form
   79,387.50/171,240 = 171,240/x
3. Step 3: Cross multiply
   79,387.50x = 171,240 × 171,240
4. Step 4: Simplify right side
   79,387.50x = 29,323,137,600
5. Step 5: Solve for x
   x = 29,323,137,600/79,387.50
6. Step 6: Final answer
   x = 369,367.19