Finding the Third Proportional to 30,539.50 and 66,301.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,539.50 : 66,301.25 = 66,301.25 : x
2. Step 2: Convert to fraction form
   30,539.50/66,301.25 = 66,301.25/x
3. Step 3: Cross multiply
   30,539.50x = 66,301.25 × 66,301.25
4. Step 4: Simplify right side
   30,539.50x = 4,395,855,751.56
5. Step 5: Solve for x
   x = 4,395,855,751.56/30,539.50
6. Step 6: Final answer
   x = 143,940.00