Finding the Third Proportional to 316,837 and 659,892

Step by Step Solution

1. Step 1: Write the proportion equation
   316,837 : 659,892 = 659,892 : x
2. Step 2: Convert to fraction form
   316,837/659,892 = 659,892/x
3. Step 3: Cross multiply
   316,837x = 659,892 × 659,892
4. Step 4: Simplify right side
   316,837x = 435,457,451,664
5. Step 5: Solve for x
   x = 435,457,451,664/316,837
6. Step 6: Final answer
   x = 1,374,389.52