Finding the Third Proportional to 434,655 and 664,895.25

Step by Step Solution

1. Step 1: Write the proportion equation
   434,655 : 664,895.25 = 664,895.25 : x
2. Step 2: Convert to fraction form
   434,655/664,895.25 = 664,895.25/x
3. Step 3: Cross multiply
   434,655x = 664,895.25 × 664,895.25
4. Step 4: Simplify right side
   434,655x = 442,085,693,472.56
5. Step 5: Solve for x
   x = 442,085,693,472.56/434,655
6. Step 6: Final answer
   x = 1,017,095.61