Finding the Third Proportional to 18,564.19 and 37,811.81

Step by Step Solution

1. Step 1: Write the proportion equation
   18,564.19 : 37,811.81 = 37,811.81 : x
2. Step 2: Convert to fraction form
   18,564.19/37,811.81 = 37,811.81/x
3. Step 3: Cross multiply
   18,564.19x = 37,811.81 × 37,811.81
4. Step 4: Simplify right side
   18,564.19x = 1,429,733,164.54
5. Step 5: Solve for x
   x = 1,429,733,164.54/18,564.19
6. Step 6: Final answer
   x = 77,015.66