Finding the Third Proportional to 30,766.50 and 66,359.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,766.50 : 66,359.25 = 66,359.25 : x
2. Step 2: Convert to fraction form
   30,766.50/66,359.25 = 66,359.25/x
3. Step 3: Cross multiply
   30,766.50x = 66,359.25 × 66,359.25
4. Step 4: Simplify right side
   30,766.50x = 4,403,550,060.56
5. Step 5: Solve for x
   x = 4,403,550,060.56/30,766.50
6. Step 6: Final answer
   x = 143,128.08