Finding the Third Proportional to 79,308.75 and 171,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,308.75 : 171,685.50 = 171,685.50 : x
2. Step 2: Convert to fraction form
   79,308.75/171,685.50 = 171,685.50/x
3. Step 3: Cross multiply
   79,308.75x = 171,685.50 × 171,685.50
4. Step 4: Simplify right side
   79,308.75x = 29,475,910,910.25
5. Step 5: Solve for x
   x = 29,475,910,910.25/79,308.75
6. Step 6: Final answer
   x = 371,660.26