Finding the Third Proportional to 81,453 and 143,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,453 : 143,587.50 = 143,587.50 : x
2. Step 2: Convert to fraction form
   81,453/143,587.50 = 143,587.50/x
3. Step 3: Cross multiply
   81,453x = 143,587.50 × 143,587.50
4. Step 4: Simplify right side
   81,453x = 20,617,370,156.25
5. Step 5: Solve for x
   x = 20,617,370,156.25/81,453
6. Step 6: Final answer
   x = 253,119.84