Finding the Third Proportional to 429,314 and 679,644

Step by Step Solution

1. Step 1: Write the proportion equation
   429,314 : 679,644 = 679,644 : x
2. Step 2: Convert to fraction form
   429,314/679,644 = 679,644/x
3. Step 3: Cross multiply
   429,314x = 679,644 × 679,644
4. Step 4: Simplify right side
   429,314x = 461,915,966,736
5. Step 5: Solve for x
   x = 461,915,966,736/429,314
6. Step 6: Final answer
   x = 1,075,939.68