Finding the Third Proportional to 111,283 and 240,385

Step by Step Solution

1. Step 1: Write the proportion equation
   111,283 : 240,385 = 240,385 : x
2. Step 2: Convert to fraction form
   111,283/240,385 = 240,385/x
3. Step 3: Cross multiply
   111,283x = 240,385 × 240,385
4. Step 4: Simplify right side
   111,283x = 57,784,948,225
5. Step 5: Solve for x
   x = 57,784,948,225/111,283
6. Step 6: Final answer
   x = 519,261.24