Finding the Third Proportional to 111,174 and 243,428

Step by Step Solution

1. Step 1: Write the proportion equation
   111,174 : 243,428 = 243,428 : x
2. Step 2: Convert to fraction form
   111,174/243,428 = 243,428/x
3. Step 3: Cross multiply
   111,174x = 243,428 × 243,428
4. Step 4: Simplify right side
   111,174x = 59,257,191,184
5. Step 5: Solve for x
   x = 59,257,191,184/111,174
6. Step 6: Final answer
   x = 533,013.04