Finding the Third Proportional to 78,132 and 161,800

Step by Step Solution

1. Step 1: Write the proportion equation
   78,132 : 161,800 = 161,800 : x
2. Step 2: Convert to fraction form
   78,132/161,800 = 161,800/x
3. Step 3: Cross multiply
   78,132x = 161,800 × 161,800
4. Step 4: Simplify right side
   78,132x = 26,179,240,000
5. Step 5: Solve for x
   x = 26,179,240,000/78,132
6. Step 6: Final answer
   x = 335,064.25