Finding the Third Proportional to 8,215.49 and 17,874.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,215.49 : 17,874.74 = 17,874.74 : x
2. Step 2: Convert to fraction form
   8,215.49/17,874.74 = 17,874.74/x
3. Step 3: Cross multiply
   8,215.49x = 17,874.74 × 17,874.74
4. Step 4: Simplify right side
   8,215.49x = 319,506,268.62
5. Step 5: Solve for x
   x = 319,506,268.62/8,215.49
6. Step 6: Final answer
   x = 38,890.72