Finding the Third Proportional to 540,831 and 840,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   540,831 : 840,748.50 = 840,748.50 : x
2. Step 2: Convert to fraction form
   540,831/840,748.50 = 840,748.50/x
3. Step 3: Cross multiply
   540,831x = 840,748.50 × 840,748.50
4. Step 4: Simplify right side
   540,831x = 706,858,040,252.25
5. Step 5: Solve for x
   x = 706,858,040,252.25/540,831
6. Step 6: Final answer
   x = 1,306,985.07