Finding the Third Proportional to 143,640 and 193,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,640 : 193,225.50 = 193,225.50 : x
2. Step 2: Convert to fraction form
   143,640/193,225.50 = 193,225.50/x
3. Step 3: Cross multiply
   143,640x = 193,225.50 × 193,225.50
4. Step 4: Simplify right side
   143,640x = 37,336,093,850.25
5. Step 5: Solve for x
   x = 37,336,093,850.25/143,640
6. Step 6: Final answer
   x = 259,928.25