Finding the Third Proportional to 111,700 and 243,058

Step by Step Solution

1. Step 1: Write the proportion equation
   111,700 : 243,058 = 243,058 : x
2. Step 2: Convert to fraction form
   111,700/243,058 = 243,058/x
3. Step 3: Cross multiply
   111,700x = 243,058 × 243,058
4. Step 4: Simplify right side
   111,700x = 59,077,191,364
5. Step 5: Solve for x
   x = 59,077,191,364/111,700
6. Step 6: Final answer
   x = 528,891.60