Finding the Third Proportional to 45,072 and 73,892

Step by Step Solution

1. Step 1: Write the proportion equation
   45,072 : 73,892 = 73,892 : x
2. Step 2: Convert to fraction form
   45,072/73,892 = 73,892/x
3. Step 3: Cross multiply
   45,072x = 73,892 × 73,892
4. Step 4: Simplify right side
   45,072x = 5,460,027,664
5. Step 5: Solve for x
   x = 5,460,027,664/45,072
6. Step 6: Final answer
   x = 121,140.12