Finding the Third Proportional to 122,310 and 188,055

Step by Step Solution

1. Step 1: Write the proportion equation
   122,310 : 188,055 = 188,055 : x
2. Step 2: Convert to fraction form
   122,310/188,055 = 188,055/x
3. Step 3: Cross multiply
   122,310x = 188,055 × 188,055
4. Step 4: Simplify right side
   122,310x = 35,364,683,025
5. Step 5: Solve for x
   x = 35,364,683,025/122,310
6. Step 6: Final answer
   x = 289,139.75