Finding the Third Proportional to 890,396 and 1,379,570

Step by Step Solution

1. Step 1: Write the proportion equation
   890,396 : 1,379,570 = 1,379,570 : x
2. Step 2: Convert to fraction form
   890,396/1,379,570 = 1,379,570/x
3. Step 3: Cross multiply
   890,396x = 1,379,570 × 1,379,570
4. Step 4: Simplify right side
   890,396x = 1,903,213,384,900
5. Step 5: Solve for x
   x = 1,903,213,384,900/890,396
6. Step 6: Final answer
   x = 2,137,490.94