Finding the Third Proportional to 116,139 and 173,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,139 : 173,758.50 = 173,758.50 : x
2. Step 2: Convert to fraction form
   116,139/173,758.50 = 173,758.50/x
3. Step 3: Cross multiply
   116,139x = 173,758.50 × 173,758.50
4. Step 4: Simplify right side
   116,139x = 30,192,016,322.25
5. Step 5: Solve for x
   x = 30,192,016,322.25/116,139
6. Step 6: Final answer
   x = 259,964.49