Finding the Third Proportional to 78,300 and 167,679

Step by Step Solution

1. Step 1: Write the proportion equation
   78,300 : 167,679 = 167,679 : x
2. Step 2: Convert to fraction form
   78,300/167,679 = 167,679/x
3. Step 3: Cross multiply
   78,300x = 167,679 × 167,679
4. Step 4: Simplify right side
   78,300x = 28,116,247,041
5. Step 5: Solve for x
   x = 28,116,247,041/78,300
6. Step 6: Final answer
   x = 359,083.61