Finding the Third Proportional to 78,988 and 169,231

Step by Step Solution

1. Step 1: Write the proportion equation
   78,988 : 169,231 = 169,231 : x
2. Step 2: Convert to fraction form
   78,988/169,231 = 169,231/x
3. Step 3: Cross multiply
   78,988x = 169,231 × 169,231
4. Step 4: Simplify right side
   78,988x = 28,639,131,361
5. Step 5: Solve for x
   x = 28,639,131,361/78,988
6. Step 6: Final answer
   x = 362,575.72