Finding the Third Proportional to 359,763 and 555,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,763 : 555,868.50 = 555,868.50 : x
2. Step 2: Convert to fraction form
   359,763/555,868.50 = 555,868.50/x
3. Step 3: Cross multiply
   359,763x = 555,868.50 × 555,868.50
4. Step 4: Simplify right side
   359,763x = 308,989,789,292.25
5. Step 5: Solve for x
   x = 308,989,789,292.25/359,763
6. Step 6: Final answer
   x = 858,870.39