Finding the Third Proportional to 19,981.69 and 30,390.19

Step by Step Solution

1. Step 1: Write the proportion equation
   19,981.69 : 30,390.19 = 30,390.19 : x
2. Step 2: Convert to fraction form
   19,981.69/30,390.19 = 30,390.19/x
3. Step 3: Cross multiply
   19,981.69x = 30,390.19 × 30,390.19
4. Step 4: Simplify right side
   19,981.69x = 923,563,496.29
5. Step 5: Solve for x
   x = 923,563,496.29/19,981.69
6. Step 6: Final answer
   x = 46,220.50