Finding the Third Proportional to 18,820.69 and 40,921.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,820.69 : 40,921.88 = 40,921.88 : x
2. Step 2: Convert to fraction form
   18,820.69/40,921.88 = 40,921.88/x
3. Step 3: Cross multiply
   18,820.69x = 40,921.88 × 40,921.88
4. Step 4: Simplify right side
   18,820.69x = 1,674,599,853.52
5. Step 5: Solve for x
   x = 1,674,599,853.52/18,820.69
6. Step 6: Final answer
   x = 88,976.55