Finding the Third Proportional to 105,545.50 and 215,394

Step by Step Solution

1. Step 1: Write the proportion equation
   105,545.50 : 215,394 = 215,394 : x
2. Step 2: Convert to fraction form
   105,545.50/215,394 = 215,394/x
3. Step 3: Cross multiply
   105,545.50x = 215,394 × 215,394
4. Step 4: Simplify right side
   105,545.50x = 46,394,575,236
5. Step 5: Solve for x
   x = 46,394,575,236/105,545.50
6. Step 6: Final answer
   x = 439,569.43