Finding the Third Proportional to 87,427.69 and 188,812.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,427.69 : 188,812.69 = 188,812.69 : x
2. Step 2: Convert to fraction form
   87,427.69/188,812.69 = 188,812.69/x
3. Step 3: Cross multiply
   87,427.69x = 188,812.69 × 188,812.69
4. Step 4: Simplify right side
   87,427.69x = 35,650,230,960.97
5. Step 5: Solve for x
   x = 35,650,230,960.97/87,427.69
6. Step 6: Final answer
   x = 407,768.20