Finding the Third Proportional to 111,654 and 243,351

Step by Step Solution

1. Step 1: Write the proportion equation
   111,654 : 243,351 = 243,351 : x
2. Step 2: Convert to fraction form
   111,654/243,351 = 243,351/x
3. Step 3: Cross multiply
   111,654x = 243,351 × 243,351
4. Step 4: Simplify right side
   111,654x = 59,219,709,201
5. Step 5: Solve for x
   x = 59,219,709,201/111,654
6. Step 6: Final answer
   x = 530,385.92