Finding the Third Proportional to 12,619.97 and 19,798.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.97 : 19,798.17 = 19,798.17 : x
2. Step 2: Convert to fraction form
   12,619.97/19,798.17 = 19,798.17/x
3. Step 3: Cross multiply
   12,619.97x = 19,798.17 × 19,798.17
4. Step 4: Simplify right side
   12,619.97x = 391,967,609.59
5. Step 5: Solve for x
   x = 391,967,609.59/12,619.97
6. Step 6: Final answer
   x = 31,059.32