Finding the Third Proportional to 81,399 and 174,480

Step by Step Solution

1. Step 1: Write the proportion equation
   81,399 : 174,480 = 174,480 : x
2. Step 2: Convert to fraction form
   81,399/174,480 = 174,480/x
3. Step 3: Cross multiply
   81,399x = 174,480 × 174,480
4. Step 4: Simplify right side
   81,399x = 30,443,270,400
5. Step 5: Solve for x
   x = 30,443,270,400/81,399
6. Step 6: Final answer
   x = 374,000.55