Finding the Third Proportional to 82,978.50 and 125,721

Step by Step Solution

1. Step 1: Write the proportion equation
   82,978.50 : 125,721 = 125,721 : x
2. Step 2: Convert to fraction form
   82,978.50/125,721 = 125,721/x
3. Step 3: Cross multiply
   82,978.50x = 125,721 × 125,721
4. Step 4: Simplify right side
   82,978.50x = 15,805,769,841
5. Step 5: Solve for x
   x = 15,805,769,841/82,978.50
6. Step 6: Final answer
   x = 190,480.30