Finding the Third Proportional to 112,616 and 242,688

Step by Step Solution

1. Step 1: Write the proportion equation
   112,616 : 242,688 = 242,688 : x
2. Step 2: Convert to fraction form
   112,616/242,688 = 242,688/x
3. Step 3: Cross multiply
   112,616x = 242,688 × 242,688
4. Step 4: Simplify right side
   112,616x = 58,897,465,344
5. Step 5: Solve for x
   x = 58,897,465,344/112,616
6. Step 6: Final answer
   x = 522,993.76