Finding the Third Proportional to 78,994 and 173,295

Step by Step Solution

1. Step 1: Write the proportion equation
   78,994 : 173,295 = 173,295 : x
2. Step 2: Convert to fraction form
   78,994/173,295 = 173,295/x
3. Step 3: Cross multiply
   78,994x = 173,295 × 173,295
4. Step 4: Simplify right side
   78,994x = 30,031,157,025
5. Step 5: Solve for x
   x = 30,031,157,025/78,994
6. Step 6: Final answer
   x = 380,170.10