Finding the Third Proportional to 139,793,090 and 218,816,162

Step by Step Solution

1. Step 1: Write the proportion equation
   139,793,090 : 218,816,162 = 218,816,162 : x
2. Step 2: Convert to fraction form
   139,793,090/218,816,162 = 218,816,162/x
3. Step 3: Cross multiply
   139,793,090x = 218,816,162 × 218,816,162
4. Step 4: Simplify right side
   139,793,090x = 47,880,512,752,410,240
5. Step 5: Solve for x
   x = 47,880,512,752,410,240/139,793,090
6. Step 6: Final answer
   x = 342,509,867.64