Finding the Third Proportional to 61,169.75 and 89,091.75

Step by Step Solution

1. Step 1: Write the proportion equation
   61,169.75 : 89,091.75 = 89,091.75 : x
2. Step 2: Convert to fraction form
   61,169.75/89,091.75 = 89,091.75/x
3. Step 3: Cross multiply
   61,169.75x = 89,091.75 × 89,091.75
4. Step 4: Simplify right side
   61,169.75x = 7,937,339,918.06
5. Step 5: Solve for x
   x = 7,937,339,918.06/61,169.75
6. Step 6: Final answer
   x = 129,759.23