Finding the Third Proportional to 81,434.50 and 117,480

Step by Step Solution

1. Step 1: Write the proportion equation
   81,434.50 : 117,480 = 117,480 : x
2. Step 2: Convert to fraction form
   81,434.50/117,480 = 117,480/x
3. Step 3: Cross multiply
   81,434.50x = 117,480 × 117,480
4. Step 4: Simplify right side
   81,434.50x = 13,801,550,400
5. Step 5: Solve for x
   x = 13,801,550,400/81,434.50
6. Step 6: Final answer
   x = 169,480.38