Finding the Third Proportional to 59,209 and 123,890

Step by Step Solution

1. Step 1: Write the proportion equation
   59,209 : 123,890 = 123,890 : x
2. Step 2: Convert to fraction form
   59,209/123,890 = 123,890/x
3. Step 3: Cross multiply
   59,209x = 123,890 × 123,890
4. Step 4: Simplify right side
   59,209x = 15,348,732,100
5. Step 5: Solve for x
   x = 15,348,732,100/59,209
6. Step 6: Final answer
   x = 259,229.71