Finding the Third Proportional to 19,826.91 and 42,920.81

Step by Step Solution

1. Step 1: Write the proportion equation
   19,826.91 : 42,920.81 = 42,920.81 : x
2. Step 2: Convert to fraction form
   19,826.91/42,920.81 = 42,920.81/x
3. Step 3: Cross multiply
   19,826.91x = 42,920.81 × 42,920.81
4. Step 4: Simplify right side
   19,826.91x = 1,842,196,145.66
5. Step 5: Solve for x
   x = 1,842,196,145.66/19,826.91
6. Step 6: Final answer
   x = 92,913.95