Finding the Third Proportional to 108,400.78 and 154,084.78

Step by Step Solution

1. Step 1: Write the proportion equation
   108,400.78 : 154,084.78 = 154,084.78 : x
2. Step 2: Convert to fraction form
   108,400.78/154,084.78 = 154,084.78/x
3. Step 3: Cross multiply
   108,400.78x = 154,084.78 × 154,084.78
4. Step 4: Simplify right side
   108,400.78x = 23,742,119,812.86
5. Step 5: Solve for x
   x = 23,742,119,812.86/108,400.78
6. Step 6: Final answer
   x = 219,021.67