Finding the Third Proportional to 13,410.70 and 19,705.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.70 : 19,705.50 = 19,705.50 : x
2. Step 2: Convert to fraction form
   13,410.70/19,705.50 = 19,705.50/x
3. Step 3: Cross multiply
   13,410.70x = 19,705.50 × 19,705.50
4. Step 4: Simplify right side
   13,410.70x = 388,306,730.25
5. Step 5: Solve for x
   x = 388,306,730.25/13,410.70
6. Step 6: Final answer
   x = 28,954.99