Finding the Third Proportional to 111,429 and 243,180

Step by Step Solution

1. Step 1: Write the proportion equation
   111,429 : 243,180 = 243,180 : x
2. Step 2: Convert to fraction form
   111,429/243,180 = 243,180/x
3. Step 3: Cross multiply
   111,429x = 243,180 × 243,180
4. Step 4: Simplify right side
   111,429x = 59,136,512,400
5. Step 5: Solve for x
   x = 59,136,512,400/111,429
6. Step 6: Final answer
   x = 530,710.25