Finding the Third Proportional to 66,894.75 and 91,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,894.75 : 91,731.50 = 91,731.50 : x
2. Step 2: Convert to fraction form
   66,894.75/91,731.50 = 91,731.50/x
3. Step 3: Cross multiply
   66,894.75x = 91,731.50 × 91,731.50
4. Step 4: Simplify right side
   66,894.75x = 8,414,668,092.25
5. Step 5: Solve for x
   x = 8,414,668,092.25/66,894.75
6. Step 6: Final answer
   x = 125,789.66