Finding the Third Proportional to 81,170.50 and 177,616

Step by Step Solution

1. Step 1: Write the proportion equation
   81,170.50 : 177,616 = 177,616 : x
2. Step 2: Convert to fraction form
   81,170.50/177,616 = 177,616/x
3. Step 3: Cross multiply
   81,170.50x = 177,616 × 177,616
4. Step 4: Simplify right side
   81,170.50x = 31,547,443,456
5. Step 5: Solve for x
   x = 31,547,443,456/81,170.50
6. Step 6: Final answer
   x = 388,656.51