Finding the Third Proportional to 201,515 and 434,499

Step by Step Solution

1. Step 1: Write the proportion equation
   201,515 : 434,499 = 434,499 : x
2. Step 2: Convert to fraction form
   201,515/434,499 = 434,499/x
3. Step 3: Cross multiply
   201,515x = 434,499 × 434,499
4. Step 4: Simplify right side
   201,515x = 188,789,381,001
5. Step 5: Solve for x
   x = 188,789,381,001/201,515
6. Step 6: Final answer
   x = 936,850.26