Finding the Third Proportional to 214,740 and 485,156

Step by Step Solution

1. Step 1: Write the proportion equation
   214,740 : 485,156 = 485,156 : x
2. Step 2: Convert to fraction form
   214,740/485,156 = 485,156/x
3. Step 3: Cross multiply
   214,740x = 485,156 × 485,156
4. Step 4: Simplify right side
   214,740x = 235,376,344,336
5. Step 5: Solve for x
   x = 235,376,344,336/214,740
6. Step 6: Final answer
   x = 1,096,099.21