Finding the Third Proportional to 15,478 and 34,040

Step by Step Solution

1. Step 1: Write the proportion equation
   15,478 : 34,040 = 34,040 : x
2. Step 2: Convert to fraction form
   15,478/34,040 = 34,040/x
3. Step 3: Cross multiply
   15,478x = 34,040 × 34,040
4. Step 4: Simplify right side
   15,478x = 1,158,721,600
5. Step 5: Solve for x
   x = 1,158,721,600/15,478
6. Step 6: Final answer
   x = 74,862.49