Finding the Third Proportional to 111,342 and 243,132

Step by Step Solution

1. Step 1: Write the proportion equation
   111,342 : 243,132 = 243,132 : x
2. Step 2: Convert to fraction form
   111,342/243,132 = 243,132/x
3. Step 3: Cross multiply
   111,342x = 243,132 × 243,132
4. Step 4: Simplify right side
   111,342x = 59,113,169,424
5. Step 5: Solve for x
   x = 59,113,169,424/111,342
6. Step 6: Final answer
   x = 530,915.28