Finding the Third Proportional to 129,174.75 and 188,658

Step by Step Solution

1. Step 1: Write the proportion equation
   129,174.75 : 188,658 = 188,658 : x
2. Step 2: Convert to fraction form
   129,174.75/188,658 = 188,658/x
3. Step 3: Cross multiply
   129,174.75x = 188,658 × 188,658
4. Step 4: Simplify right side
   129,174.75x = 35,591,840,964
5. Step 5: Solve for x
   x = 35,591,840,964/129,174.75
6. Step 6: Final answer
   x = 275,532.49