Finding the Third Proportional to 81,903 and 123,432

Step by Step Solution

1. Step 1: Write the proportion equation
   81,903 : 123,432 = 123,432 : x
2. Step 2: Convert to fraction form
   81,903/123,432 = 123,432/x
3. Step 3: Cross multiply
   81,903x = 123,432 × 123,432
4. Step 4: Simplify right side
   81,903x = 15,235,458,624
5. Step 5: Solve for x
   x = 15,235,458,624/81,903
6. Step 6: Final answer
   x = 186,018.32