Finding the Third Proportional to 20,457.56 and 27,767.81

Step by Step Solution

1. Step 1: Write the proportion equation
   20,457.56 : 27,767.81 = 27,767.81 : x
2. Step 2: Convert to fraction form
   20,457.56/27,767.81 = 27,767.81/x
3. Step 3: Cross multiply
   20,457.56x = 27,767.81 × 27,767.81
4. Step 4: Simplify right side
   20,457.56x = 771,051,411.04
5. Step 5: Solve for x
   x = 771,051,411.04/20,457.56
6. Step 6: Final answer
   x = 37,690.29