Finding the Third Proportional to 78,468.50 and 171,608

Step by Step Solution

1. Step 1: Write the proportion equation
   78,468.50 : 171,608 = 171,608 : x
2. Step 2: Convert to fraction form
   78,468.50/171,608 = 171,608/x
3. Step 3: Cross multiply
   78,468.50x = 171,608 × 171,608
4. Step 4: Simplify right side
   78,468.50x = 29,449,305,664
5. Step 5: Solve for x
   x = 29,449,305,664/78,468.50
6. Step 6: Final answer
   x = 375,300.99