Finding the Third Proportional to 347,354.50 and 542,040

Step by Step Solution

1. Step 1: Write the proportion equation
   347,354.50 : 542,040 = 542,040 : x
2. Step 2: Convert to fraction form
   347,354.50/542,040 = 542,040/x
3. Step 3: Cross multiply
   347,354.50x = 542,040 × 542,040
4. Step 4: Simplify right side
   347,354.50x = 293,807,361,600
5. Step 5: Solve for x
   x = 293,807,361,600/347,354.50
6. Step 6: Final answer
   x = 845,842.97