Finding the Third Proportional to 78,469 and 169,972

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469 : 169,972 = 169,972 : x
2. Step 2: Convert to fraction form
   78,469/169,972 = 169,972/x
3. Step 3: Cross multiply
   78,469x = 169,972 × 169,972
4. Step 4: Simplify right side
   78,469x = 28,890,480,784
5. Step 5: Solve for x
   x = 28,890,480,784/78,469
6. Step 6: Final answer
   x = 368,177.00