Finding the Third Proportional to 111,674 and 243,031

Step by Step Solution

1. Step 1: Write the proportion equation
   111,674 : 243,031 = 243,031 : x
2. Step 2: Convert to fraction form
   111,674/243,031 = 243,031/x
3. Step 3: Cross multiply
   111,674x = 243,031 × 243,031
4. Step 4: Simplify right side
   111,674x = 59,064,066,961
5. Step 5: Solve for x
   x = 59,064,066,961/111,674
6. Step 6: Final answer
   x = 528,897.21