Finding the Third Proportional to 80,515 and 116,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,515 : 116,128.50 = 116,128.50 : x
2. Step 2: Convert to fraction form
   80,515/116,128.50 = 116,128.50/x
3. Step 3: Cross multiply
   80,515x = 116,128.50 × 116,128.50
4. Step 4: Simplify right side
   80,515x = 13,485,828,512.25
5. Step 5: Solve for x
   x = 13,485,828,512.25/80,515
6. Step 6: Final answer
   x = 167,494.61