Finding the Third Proportional to 78,897.38 and 171,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,897.38 : 171,166.50 = 171,166.50 : x
2. Step 2: Convert to fraction form
   78,897.38/171,166.50 = 171,166.50/x
3. Step 3: Cross multiply
   78,897.38x = 171,166.50 × 171,166.50
4. Step 4: Simplify right side
   78,897.38x = 29,297,970,722.25
5. Step 5: Solve for x
   x = 29,297,970,722.25/78,897.38
6. Step 6: Final answer
   x = 371,342.78