Finding the Third Proportional to 30,109.13 and 65,580.19

Step by Step Solution

1. Step 1: Write the proportion equation
   30,109.13 : 65,580.19 = 65,580.19 : x
2. Step 2: Convert to fraction form
   30,109.13/65,580.19 = 65,580.19/x
3. Step 3: Cross multiply
   30,109.13x = 65,580.19 × 65,580.19
4. Step 4: Simplify right side
   30,109.13x = 4,300,760,992.54
5. Step 5: Solve for x
   x = 4,300,760,992.54/30,109.13
6. Step 6: Final answer
   x = 142,839.12