Finding the Third Proportional to 78,234.75 and 168,429.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,234.75 : 168,429.38 = 168,429.38 : x
2. Step 2: Convert to fraction form
   78,234.75/168,429.38 = 168,429.38/x
3. Step 3: Cross multiply
   78,234.75x = 168,429.38 × 168,429.38
4. Step 4: Simplify right side
   78,234.75x = 28,368,454,362.89
5. Step 5: Solve for x
   x = 28,368,454,362.89/78,234.75
6. Step 6: Final answer
   x = 362,606.83