Finding the Third Proportional to 81,903 and 123,431.25

Step by Step Solution

1. Step 1: Write the proportion equation
   81,903 : 123,431.25 = 123,431.25 : x
2. Step 2: Convert to fraction form
   81,903/123,431.25 = 123,431.25/x
3. Step 3: Cross multiply
   81,903x = 123,431.25 × 123,431.25
4. Step 4: Simplify right side
   81,903x = 15,235,273,476.56
5. Step 5: Solve for x
   x = 15,235,273,476.56/81,903
6. Step 6: Final answer
   x = 186,016.06