Finding the Third Proportional to 78,468 and 170,040

Step by Step Solution

1. Step 1: Write the proportion equation
   78,468 : 170,040 = 170,040 : x
2. Step 2: Convert to fraction form
   78,468/170,040 = 170,040/x
3. Step 3: Cross multiply
   78,468x = 170,040 × 170,040
4. Step 4: Simplify right side
   78,468x = 28,913,601,600
5. Step 5: Solve for x
   x = 28,913,601,600/78,468
6. Step 6: Final answer
   x = 368,476.34