Finding the Third Proportional to 386,364.50 and 591,020

Step by Step Solution

1. Step 1: Write the proportion equation
   386,364.50 : 591,020 = 591,020 : x
2. Step 2: Convert to fraction form
   386,364.50/591,020 = 591,020/x
3. Step 3: Cross multiply
   386,364.50x = 591,020 × 591,020
4. Step 4: Simplify right side
   386,364.50x = 349,304,640,400
5. Step 5: Solve for x
   x = 349,304,640,400/386,364.50
6. Step 6: Final answer
   x = 904,080.58