Finding the Third Proportional to 350,868 and 542,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,868 : 542,839.50 = 542,839.50 : x
2. Step 2: Convert to fraction form
   350,868/542,839.50 = 542,839.50/x
3. Step 3: Cross multiply
   350,868x = 542,839.50 × 542,839.50
4. Step 4: Simplify right side
   350,868x = 294,674,722,760.25
5. Step 5: Solve for x
   x = 294,674,722,760.25/350,868
6. Step 6: Final answer
   x = 839,844.96