Finding the Third Proportional to 111,156 and 243,917

Step by Step Solution

1. Step 1: Write the proportion equation
   111,156 : 243,917 = 243,917 : x
2. Step 2: Convert to fraction form
   111,156/243,917 = 243,917/x
3. Step 3: Cross multiply
   111,156x = 243,917 × 243,917
4. Step 4: Simplify right side
   111,156x = 59,495,502,889
5. Step 5: Solve for x
   x = 59,495,502,889/111,156
6. Step 6: Final answer
   x = 535,243.29