Finding the Third Proportional to 111,195 and 243,156

Step by Step Solution

1. Step 1: Write the proportion equation
   111,195 : 243,156 = 243,156 : x
2. Step 2: Convert to fraction form
   111,195/243,156 = 243,156/x
3. Step 3: Cross multiply
   111,195x = 243,156 × 243,156
4. Step 4: Simplify right side
   111,195x = 59,124,840,336
5. Step 5: Solve for x
   x = 59,124,840,336/111,195
6. Step 6: Final answer
   x = 531,722.11