Finding the Third Proportional to 19,498.50 and 39,921.19

Step by Step Solution

1. Step 1: Write the proportion equation
   19,498.50 : 39,921.19 = 39,921.19 : x
2. Step 2: Convert to fraction form
   19,498.50/39,921.19 = 39,921.19/x
3. Step 3: Cross multiply
   19,498.50x = 39,921.19 × 39,921.19
4. Step 4: Simplify right side
   19,498.50x = 1,593,701,211.41
5. Step 5: Solve for x
   x = 1,593,701,211.41/19,498.50
6. Step 6: Final answer
   x = 81,734.55