Finding the Third Proportional to 435,345 and 672,719.25

Step by Step Solution

1. Step 1: Write the proportion equation
   435,345 : 672,719.25 = 672,719.25 : x
2. Step 2: Convert to fraction form
   435,345/672,719.25 = 672,719.25/x
3. Step 3: Cross multiply
   435,345x = 672,719.25 × 672,719.25
4. Step 4: Simplify right side
   435,345x = 452,551,189,320.56
5. Step 5: Solve for x
   x = 452,551,189,320.56/435,345
6. Step 6: Final answer
   x = 1,039,523.11