Finding the Third Proportional to 19,847 and 42,423.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,847 : 42,423.25 = 42,423.25 : x
2. Step 2: Convert to fraction form
   19,847/42,423.25 = 42,423.25/x
3. Step 3: Cross multiply
   19,847x = 42,423.25 × 42,423.25
4. Step 4: Simplify right side
   19,847x = 1,799,732,140.56
5. Step 5: Solve for x
   x = 1,799,732,140.56/19,847
6. Step 6: Final answer
   x = 90,680.31