Finding the Third Proportional to 113,878.50 and 166,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,878.50 : 166,429.50 = 166,429.50 : x
2. Step 2: Convert to fraction form
   113,878.50/166,429.50 = 166,429.50/x
3. Step 3: Cross multiply
   113,878.50x = 166,429.50 × 166,429.50
4. Step 4: Simplify right side
   113,878.50x = 27,698,778,470.25
5. Step 5: Solve for x
   x = 27,698,778,470.25/113,878.50
6. Step 6: Final answer
   x = 243,230.97