Finding the Third Proportional to 111,696 and 243,120

Step by Step Solution

1. Step 1: Write the proportion equation
   111,696 : 243,120 = 243,120 : x
2. Step 2: Convert to fraction form
   111,696/243,120 = 243,120/x
3. Step 3: Cross multiply
   111,696x = 243,120 × 243,120
4. Step 4: Simplify right side
   111,696x = 59,107,334,400
5. Step 5: Solve for x
   x = 59,107,334,400/111,696
6. Step 6: Final answer
   x = 529,180.40