Finding the Third Proportional to 25,218 and 42,903

Step by Step Solution

1. Step 1: Write the proportion equation
   25,218 : 42,903 = 42,903 : x
2. Step 2: Convert to fraction form
   25,218/42,903 = 42,903/x
3. Step 3: Cross multiply
   25,218x = 42,903 × 42,903
4. Step 4: Simplify right side
   25,218x = 1,840,667,409
5. Step 5: Solve for x
   x = 1,840,667,409/25,218
6. Step 6: Final answer
   x = 72,990.22