Finding the Third Proportional to 187,818 and 442,918

Step by Step Solution

1. Step 1: Write the proportion equation
   187,818 : 442,918 = 442,918 : x
2. Step 2: Convert to fraction form
   187,818/442,918 = 442,918/x
3. Step 3: Cross multiply
   187,818x = 442,918 × 442,918
4. Step 4: Simplify right side
   187,818x = 196,176,354,724
5. Step 5: Solve for x
   x = 196,176,354,724/187,818
6. Step 6: Final answer
   x = 1,044,502.42