Finding the Third Proportional to 640,912 and 1,483,670

Step by Step Solution

1. Step 1: Write the proportion equation
   640,912 : 1,483,670 = 1,483,670 : x
2. Step 2: Convert to fraction form
   640,912/1,483,670 = 1,483,670/x
3. Step 3: Cross multiply
   640,912x = 1,483,670 × 1,483,670
4. Step 4: Simplify right side
   640,912x = 2,201,276,668,900
5. Step 5: Solve for x
   x = 2,201,276,668,900/640,912
6. Step 6: Final answer
   x = 3,434,600.49