Finding the Third Proportional to 66,917.25 and 91,758.38

Step by Step Solution

1. Step 1: Write the proportion equation
   66,917.25 : 91,758.38 = 91,758.38 : x
2. Step 2: Convert to fraction form
   66,917.25/91,758.38 = 91,758.38/x
3. Step 3: Cross multiply
   66,917.25x = 91,758.38 × 91,758.38
4. Step 4: Simplify right side
   66,917.25x = 8,419,599,382.64
5. Step 5: Solve for x
   x = 8,419,599,382.64/66,917.25
6. Step 6: Final answer
   x = 125,821.06