Finding the Third Proportional to 344,978.50 and 529,540

Step by Step Solution

1. Step 1: Write the proportion equation
   344,978.50 : 529,540 = 529,540 : x
2. Step 2: Convert to fraction form
   344,978.50/529,540 = 529,540/x
3. Step 3: Cross multiply
   344,978.50x = 529,540 × 529,540
4. Step 4: Simplify right side
   344,978.50x = 280,412,611,600
5. Step 5: Solve for x
   x = 280,412,611,600/344,978.50
6. Step 6: Final answer
   x = 812,840.83