Finding the Third Proportional to 20,305.69 and 42,919.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,305.69 : 42,919.88 = 42,919.88 : x
2. Step 2: Convert to fraction form
   20,305.69/42,919.88 = 42,919.88/x
3. Step 3: Cross multiply
   20,305.69x = 42,919.88 × 42,919.88
4. Step 4: Simplify right side
   20,305.69x = 1,842,115,670.02
5. Step 5: Solve for x
   x = 1,842,115,670.02/20,305.69
6. Step 6: Final answer
   x = 90,719.20