Finding the Third Proportional to 56,440 and 82,976

Step by Step Solution

1. Step 1: Write the proportion equation
   56,440 : 82,976 = 82,976 : x
2. Step 2: Convert to fraction form
   56,440/82,976 = 82,976/x
3. Step 3: Cross multiply
   56,440x = 82,976 × 82,976
4. Step 4: Simplify right side
   56,440x = 6,885,016,576
5. Step 5: Solve for x
   x = 6,885,016,576/56,440
6. Step 6: Final answer
   x = 121,988.25