Finding the Third Proportional to 66,951.75 and 91,805.63

Step by Step Solution

1. Step 1: Write the proportion equation
   66,951.75 : 91,805.63 = 91,805.63 : x
2. Step 2: Convert to fraction form
   66,951.75/91,805.63 = 91,805.63/x
3. Step 3: Cross multiply
   66,951.75x = 91,805.63 × 91,805.63
4. Step 4: Simplify right side
   66,951.75x = 8,428,272,781.64
5. Step 5: Solve for x
   x = 8,428,272,781.64/66,951.75
6. Step 6: Final answer
   x = 125,885.77