Finding the Third Proportional to 188,853 and 386,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188,853 : 386,431.50 = 386,431.50 : x
2. Step 2: Convert to fraction form
   188,853/386,431.50 = 386,431.50/x
3. Step 3: Cross multiply
   188,853x = 386,431.50 × 386,431.50
4. Step 4: Simplify right side
   188,853x = 149,329,304,192.25
5. Step 5: Solve for x
   x = 149,329,304,192.25/188,853
6. Step 6: Final answer
   x = 790,717.14