Finding the Third Proportional to 30,619.88 and 65,613.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,619.88 : 65,613.75 = 65,613.75 : x
2. Step 2: Convert to fraction form
   30,619.88/65,613.75 = 65,613.75/x
3. Step 3: Cross multiply
   30,619.88x = 65,613.75 × 65,613.75
4. Step 4: Simplify right side
   30,619.88x = 4,305,164,189.06
5. Step 5: Solve for x
   x = 4,305,164,189.06/30,619.88
6. Step 6: Final answer
   x = 140,600.32