Finding the Third Proportional to 435,339 and 672,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,339 : 672,709.50 = 672,709.50 : x
2. Step 2: Convert to fraction form
   435,339/672,709.50 = 672,709.50/x
3. Step 3: Cross multiply
   435,339x = 672,709.50 × 672,709.50
4. Step 4: Simplify right side
   435,339x = 452,538,071,390.25
5. Step 5: Solve for x
   x = 452,538,071,390.25/435,339
6. Step 6: Final answer
   x = 1,039,507.31