Finding the Third Proportional to 641,185.50 and 996,780

Step by Step Solution

1. Step 1: Write the proportion equation
   641,185.50 : 996,780 = 996,780 : x
2. Step 2: Convert to fraction form
   641,185.50/996,780 = 996,780/x
3. Step 3: Cross multiply
   641,185.50x = 996,780 × 996,780
4. Step 4: Simplify right side
   641,185.50x = 993,570,368,400
5. Step 5: Solve for x
   x = 993,570,368,400/641,185.50
6. Step 6: Final answer
   x = 1,549,583.34