Finding the Third Proportional to 309,662 and 436,076

Step by Step Solution

1. Step 1: Write the proportion equation
   309,662 : 436,076 = 436,076 : x
2. Step 2: Convert to fraction form
   309,662/436,076 = 436,076/x
3. Step 3: Cross multiply
   309,662x = 436,076 × 436,076
4. Step 4: Simplify right side
   309,662x = 190,162,277,776
5. Step 5: Solve for x
   x = 190,162,277,776/309,662
6. Step 6: Final answer
   x = 614,096.27