Finding the Third Proportional to 156,941 and 221,105

Step by Step Solution

1. Step 1: Write the proportion equation
   156,941 : 221,105 = 221,105 : x
2. Step 2: Convert to fraction form
   156,941/221,105 = 221,105/x
3. Step 3: Cross multiply
   156,941x = 221,105 × 221,105
4. Step 4: Simplify right side
   156,941x = 48,887,421,025
5. Step 5: Solve for x
   x = 48,887,421,025/156,941
6. Step 6: Final answer
   x = 311,501.91