Finding the Third Proportional to 113,687 and 189,467

Step by Step Solution

1. Step 1: Write the proportion equation
   113,687 : 189,467 = 189,467 : x
2. Step 2: Convert to fraction form
   113,687/189,467 = 189,467/x
3. Step 3: Cross multiply
   113,687x = 189,467 × 189,467
4. Step 4: Simplify right side
   113,687x = 35,897,744,089
5. Step 5: Solve for x
   x = 35,897,744,089/113,687
6. Step 6: Final answer
   x = 315,759.45