Finding the Third Proportional to 78,132 and 161,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,132 : 161,803.50 = 161,803.50 : x
2. Step 2: Convert to fraction form
   78,132/161,803.50 = 161,803.50/x
3. Step 3: Cross multiply
   78,132x = 161,803.50 × 161,803.50
4. Step 4: Simplify right side
   78,132x = 26,180,372,612.25
5. Step 5: Solve for x
   x = 26,180,372,612.25/78,132
6. Step 6: Final answer
   x = 335,078.75