Finding the Third Proportional to 123,399 and 186,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,399 : 186,007.50 = 186,007.50 : x
2. Step 2: Convert to fraction form
   123,399/186,007.50 = 186,007.50/x
3. Step 3: Cross multiply
   123,399x = 186,007.50 × 186,007.50
4. Step 4: Simplify right side
   123,399x = 34,598,790,056.25
5. Step 5: Solve for x
   x = 34,598,790,056.25/123,399
6. Step 6: Final answer
   x = 280,381.45