Finding the Third Proportional to 644,182.50 and 946,590

Step by Step Solution

1. Step 1: Write the proportion equation
   644,182.50 : 946,590 = 946,590 : x
2. Step 2: Convert to fraction form
   644,182.50/946,590 = 946,590/x
3. Step 3: Cross multiply
   644,182.50x = 946,590 × 946,590
4. Step 4: Simplify right side
   644,182.50x = 896,032,628,100
5. Step 5: Solve for x
   x = 896,032,628,100/644,182.50
6. Step 6: Final answer
   x = 1,390,960.84