Finding the Third Proportional to 431,454 and 675,349.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,454 : 675,349.50 = 675,349.50 : x
2. Step 2: Convert to fraction form
   431,454/675,349.50 = 675,349.50/x
3. Step 3: Cross multiply
   431,454x = 675,349.50 × 675,349.50
4. Step 4: Simplify right side
   431,454x = 456,096,947,150.25
5. Step 5: Solve for x
   x = 456,096,947,150.25/431,454
6. Step 6: Final answer
   x = 1,057,116.05