Finding the Third Proportional to 30,457.69 and 65,410.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,457.69 : 65,410.88 = 65,410.88 : x
2. Step 2: Convert to fraction form
   30,457.69/65,410.88 = 65,410.88/x
3. Step 3: Cross multiply
   30,457.69x = 65,410.88 × 65,410.88
4. Step 4: Simplify right side
   30,457.69x = 4,278,582,568.27
5. Step 5: Solve for x
   x = 4,278,582,568.27/30,457.69
6. Step 6: Final answer
   x = 140,476.28