Finding the Third Proportional to 55,116 and 73,872

Step by Step Solution

1. Step 1: Write the proportion equation
   55,116 : 73,872 = 73,872 : x
2. Step 2: Convert to fraction form
   55,116/73,872 = 73,872/x
3. Step 3: Cross multiply
   55,116x = 73,872 × 73,872
4. Step 4: Simplify right side
   55,116x = 5,457,072,384
5. Step 5: Solve for x
   x = 5,457,072,384/55,116
6. Step 6: Final answer
   x = 99,010.68