Finding the Third Proportional to 185,320.50 and 386,724

Step by Step Solution

1. Step 1: Write the proportion equation
   185,320.50 : 386,724 = 386,724 : x
2. Step 2: Convert to fraction form
   185,320.50/386,724 = 386,724/x
3. Step 3: Cross multiply
   185,320.50x = 386,724 × 386,724
4. Step 4: Simplify right side
   185,320.50x = 149,555,452,176
5. Step 5: Solve for x
   x = 149,555,452,176/185,320.50
6. Step 6: Final answer
   x = 807,009.76