Finding the Third Proportional to 156,774 and 223,401

Step by Step Solution

1. Step 1: Write the proportion equation
   156,774 : 223,401 = 223,401 : x
2. Step 2: Convert to fraction form
   156,774/223,401 = 223,401/x
3. Step 3: Cross multiply
   156,774x = 223,401 × 223,401
4. Step 4: Simplify right side
   156,774x = 49,908,006,801
5. Step 5: Solve for x
   x = 49,908,006,801/156,774
6. Step 6: Final answer
   x = 318,343.65