Finding the Third Proportional to 12,620.81 and 19,799.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.81 : 19,799.44 = 19,799.44 : x
2. Step 2: Convert to fraction form
   12,620.81/19,799.44 = 19,799.44/x
3. Step 3: Cross multiply
   12,620.81x = 19,799.44 × 19,799.44
4. Step 4: Simplify right side
   12,620.81x = 392,017,725.32
5. Step 5: Solve for x
   x = 392,017,725.32/12,620.81
6. Step 6: Final answer
   x = 31,061.21