Finding the Third Proportional to 540,907.50 and 856,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   540,907.50 : 856,513.50 = 856,513.50 : x
2. Step 2: Convert to fraction form
   540,907.50/856,513.50 = 856,513.50/x
3. Step 3: Cross multiply
   540,907.50x = 856,513.50 × 856,513.50
4. Step 4: Simplify right side
   540,907.50x = 733,615,375,682.25
5. Step 5: Solve for x
   x = 733,615,375,682.25/540,907.50
6. Step 6: Final answer
   x = 1,356,267.71