Finding the Third Proportional to 111,712 and 243,080

Step by Step Solution

1. Step 1: Write the proportion equation
   111,712 : 243,080 = 243,080 : x
2. Step 2: Convert to fraction form
   111,712/243,080 = 243,080/x
3. Step 3: Cross multiply
   111,712x = 243,080 × 243,080
4. Step 4: Simplify right side
   111,712x = 59,087,886,400
5. Step 5: Solve for x
   x = 59,087,886,400/111,712
6. Step 6: Final answer
   x = 528,930.52