Finding the Third Proportional to 209,290.50 and 445,554

Step by Step Solution

1. Step 1: Write the proportion equation
   209,290.50 : 445,554 = 445,554 : x
2. Step 2: Convert to fraction form
   209,290.50/445,554 = 445,554/x
3. Step 3: Cross multiply
   209,290.50x = 445,554 × 445,554
4. Step 4: Simplify right side
   209,290.50x = 198,518,366,916
5. Step 5: Solve for x
   x = 198,518,366,916/209,290.50
6. Step 6: Final answer
   x = 948,530.23