Finding the Third Proportional to 65,317.64 and 143,085.23

Step by Step Solution

1. Step 1: Write the proportion equation
   65,317.64 : 143,085.23 = 143,085.23 : x
2. Step 2: Convert to fraction form
   65,317.64/143,085.23 = 143,085.23/x
3. Step 3: Cross multiply
   65,317.64x = 143,085.23 × 143,085.23
4. Step 4: Simplify right side
   65,317.64x = 20,473,384,296.15
5. Step 5: Solve for x
   x = 20,473,384,296.15/65,317.64
6. Step 6: Final answer
   x = 313,443.41