Finding the Third Proportional to 178,428.38 and 242,209.69

Step by Step Solution

1. Step 1: Write the proportion equation
   178,428.38 : 242,209.69 = 242,209.69 : x
2. Step 2: Convert to fraction form
   178,428.38/242,209.69 = 242,209.69/x
3. Step 3: Cross multiply
   178,428.38x = 242,209.69 × 242,209.69
4. Step 4: Simplify right side
   178,428.38x = 58,665,532,718.85
5. Step 5: Solve for x
   x = 58,665,532,718.85/178,428.38
6. Step 6: Final answer
   x = 328,790.38