Finding the Third Proportional to 112,396 and 242,216

Step by Step Solution

1. Step 1: Write the proportion equation
   112,396 : 242,216 = 242,216 : x
2. Step 2: Convert to fraction form
   112,396/242,216 = 242,216/x
3. Step 3: Cross multiply
   112,396x = 242,216 × 242,216
4. Step 4: Simplify right side
   112,396x = 58,668,590,656
5. Step 5: Solve for x
   x = 58,668,590,656/112,396
6. Step 6: Final answer
   x = 521,981.13