Finding the Third Proportional to 78,894 and 171,612

Step by Step Solution

1. Step 1: Write the proportion equation
   78,894 : 171,612 = 171,612 : x
2. Step 2: Convert to fraction form
   78,894/171,612 = 171,612/x
3. Step 3: Cross multiply
   78,894x = 171,612 × 171,612
4. Step 4: Simplify right side
   78,894x = 29,450,678,544
5. Step 5: Solve for x
   x = 29,450,678,544/78,894
6. Step 6: Final answer
   x = 373,294.28