Finding the Third Proportional to 68,789.50 and 102,868

Step by Step Solution

1. Step 1: Write the proportion equation
   68,789.50 : 102,868 = 102,868 : x
2. Step 2: Convert to fraction form
   68,789.50/102,868 = 102,868/x
3. Step 3: Cross multiply
   68,789.50x = 102,868 × 102,868
4. Step 4: Simplify right side
   68,789.50x = 10,581,825,424
5. Step 5: Solve for x
   x = 10,581,825,424/68,789.50
6. Step 6: Final answer
   x = 153,829.08