Finding the Third Proportional to 69,072 and 103,272

Step by Step Solution

1. Step 1: Write the proportion equation
   69,072 : 103,272 = 103,272 : x
2. Step 2: Convert to fraction form
   69,072/103,272 = 103,272/x
3. Step 3: Cross multiply
   69,072x = 103,272 × 103,272
4. Step 4: Simplify right side
   69,072x = 10,665,105,984
5. Step 5: Solve for x
   x = 10,665,105,984/69,072
6. Step 6: Final answer
   x = 154,405.63