Finding the Third Proportional to 19,730.25 and 42,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,730.25 : 42,739.31 = 42,739.31 : x
2. Step 2: Convert to fraction form
   19,730.25/42,739.31 = 42,739.31/x
3. Step 3: Cross multiply
   19,730.25x = 42,739.31 × 42,739.31
4. Step 4: Simplify right side
   19,730.25x = 1,826,648,832.97
5. Step 5: Solve for x
   x = 1,826,648,832.97/19,730.25
6. Step 6: Final answer
   x = 92,581.13