Finding the Third Proportional to 18,275.81 and 37,987.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,275.81 : 37,987.69 = 37,987.69 : x
2. Step 2: Convert to fraction form
   18,275.81/37,987.69 = 37,987.69/x
3. Step 3: Cross multiply
   18,275.81x = 37,987.69 × 37,987.69
4. Step 4: Simplify right side
   18,275.81x = 1,443,064,401.60
5. Step 5: Solve for x
   x = 1,443,064,401.60/18,275.81
6. Step 6: Final answer
   x = 78,960.34