Finding the Third Proportional to 298,940 and 436,914

Step by Step Solution

1. Step 1: Write the proportion equation
   298,940 : 436,914 = 436,914 : x
2. Step 2: Convert to fraction form
   298,940/436,914 = 436,914/x
3. Step 3: Cross multiply
   298,940x = 436,914 × 436,914
4. Step 4: Simplify right side
   298,940x = 190,893,843,396
5. Step 5: Solve for x
   x = 190,893,843,396/298,940
6. Step 6: Final answer
   x = 638,569.09