Finding the Third Proportional to 431,514 and 675,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,514 : 675,445.50 = 675,445.50 : x
2. Step 2: Convert to fraction form
   431,514/675,445.50 = 675,445.50/x
3. Step 3: Cross multiply
   431,514x = 675,445.50 × 675,445.50
4. Step 4: Simplify right side
   431,514x = 456,226,623,470.25
5. Step 5: Solve for x
   x = 456,226,623,470.25/431,514
6. Step 6: Final answer
   x = 1,057,269.58