Finding the Third Proportional to 72,072 and 115,128

Step by Step Solution

1. Step 1: Write the proportion equation
   72,072 : 115,128 = 115,128 : x
2. Step 2: Convert to fraction form
   72,072/115,128 = 115,128/x
3. Step 3: Cross multiply
   72,072x = 115,128 × 115,128
4. Step 4: Simplify right side
   72,072x = 13,254,456,384
5. Step 5: Solve for x
   x = 13,254,456,384/72,072
6. Step 6: Final answer
   x = 183,905.77