Finding the Third Proportional to 644,414.63 and 946,890

Step by Step Solution

1. Step 1: Write the proportion equation
   644,414.63 : 946,890 = 946,890 : x
2. Step 2: Convert to fraction form
   644,414.63/946,890 = 946,890/x
3. Step 3: Cross multiply
   644,414.63x = 946,890 × 946,890
4. Step 4: Simplify right side
   644,414.63x = 896,600,672,100
5. Step 5: Solve for x
   x = 896,600,672,100/644,414.63
6. Step 6: Final answer
   x = 1,391,341.28