Finding the Third Proportional to 53,943.75 and 81,668.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,943.75 : 81,668.25 = 81,668.25 : x
2. Step 2: Convert to fraction form
   53,943.75/81,668.25 = 81,668.25/x
3. Step 3: Cross multiply
   53,943.75x = 81,668.25 × 81,668.25
4. Step 4: Simplify right side
   53,943.75x = 6,669,703,058.06
5. Step 5: Solve for x
   x = 6,669,703,058.06/53,943.75
6. Step 6: Final answer
   x = 123,641.81