Finding the Third Proportional to 661,286 and 1,440,670

Step by Step Solution

1. Step 1: Write the proportion equation
   661,286 : 1,440,670 = 1,440,670 : x
2. Step 2: Convert to fraction form
   661,286/1,440,670 = 1,440,670/x
3. Step 3: Cross multiply
   661,286x = 1,440,670 × 1,440,670
4. Step 4: Simplify right side
   661,286x = 2,075,530,048,900
5. Step 5: Solve for x
   x = 2,075,530,048,900/661,286
6. Step 6: Final answer
   x = 3,138,626.93