Finding the Third Proportional to 81,469.50 and 115,368

Step by Step Solution

1. Step 1: Write the proportion equation
   81,469.50 : 115,368 = 115,368 : x
2. Step 2: Convert to fraction form
   81,469.50/115,368 = 115,368/x
3. Step 3: Cross multiply
   81,469.50x = 115,368 × 115,368
4. Step 4: Simplify right side
   81,469.50x = 13,309,775,424
5. Step 5: Solve for x
   x = 13,309,775,424/81,469.50
6. Step 6: Final answer
   x = 163,371.27