Finding the Third Proportional to 179,139 and 391,026

Step by Step Solution

1. Step 1: Write the proportion equation
   179,139 : 391,026 = 391,026 : x
2. Step 2: Convert to fraction form
   179,139/391,026 = 391,026/x
3. Step 3: Cross multiply
   179,139x = 391,026 × 391,026
4. Step 4: Simplify right side
   179,139x = 152,901,332,676
5. Step 5: Solve for x
   x = 152,901,332,676/179,139
6. Step 6: Final answer
   x = 853,534.59