Finding the Third Proportional to 30,415.50 and 65,034.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,415.50 : 65,034.75 = 65,034.75 : x
2. Step 2: Convert to fraction form
   30,415.50/65,034.75 = 65,034.75/x
3. Step 3: Cross multiply
   30,415.50x = 65,034.75 × 65,034.75
4. Step 4: Simplify right side
   30,415.50x = 4,229,518,707.56
5. Step 5: Solve for x
   x = 4,229,518,707.56/30,415.50
6. Step 6: Final answer
   x = 139,058.00