Finding the Third Proportional to 111,702 and 243,102

Step by Step Solution

1. Step 1: Write the proportion equation
   111,702 : 243,102 = 243,102 : x
2. Step 2: Convert to fraction form
   111,702/243,102 = 243,102/x
3. Step 3: Cross multiply
   111,702x = 243,102 × 243,102
4. Step 4: Simplify right side
   111,702x = 59,098,582,404
5. Step 5: Solve for x
   x = 59,098,582,404/111,702
6. Step 6: Final answer
   x = 529,073.63