Finding the Third Proportional to 640,430 and 1,004,592

Step by Step Solution

1. Step 1: Write the proportion equation
   640,430 : 1,004,592 = 1,004,592 : x
2. Step 2: Convert to fraction form
   640,430/1,004,592 = 1,004,592/x
3. Step 3: Cross multiply
   640,430x = 1,004,592 × 1,004,592
4. Step 4: Simplify right side
   640,430x = 1,009,205,086,464
5. Step 5: Solve for x
   x = 1,009,205,086,464/640,430
6. Step 6: Final answer
   x = 1,575,824.19