Finding the Third Proportional to 355,442.50 and 782,930

Step by Step Solution

1. Step 1: Write the proportion equation
   355,442.50 : 782,930 = 782,930 : x
2. Step 2: Convert to fraction form
   355,442.50/782,930 = 782,930/x
3. Step 3: Cross multiply
   355,442.50x = 782,930 × 782,930
4. Step 4: Simplify right side
   355,442.50x = 612,979,384,900
5. Step 5: Solve for x
   x = 612,979,384,900/355,442.50
6. Step 6: Final answer
   x = 1,724,552.87