Finding the Third Proportional to 431,463 and 675,364.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,463 : 675,364.50 = 675,364.50 : x
2. Step 2: Convert to fraction form
   431,463/675,364.50 = 675,364.50/x
3. Step 3: Cross multiply
   431,463x = 675,364.50 × 675,364.50
4. Step 4: Simplify right side
   431,463x = 456,117,207,860.25
5. Step 5: Solve for x
   x = 456,117,207,860.25/431,463
6. Step 6: Final answer
   x = 1,057,140.95