Finding the Third Proportional to 545,640.47 and 826,009.31

Step by Step Solution

1. Step 1: Write the proportion equation
   545,640.47 : 826,009.31 = 826,009.31 : x
2. Step 2: Convert to fraction form
   545,640.47/826,009.31 = 826,009.31/x
3. Step 3: Cross multiply
   545,640.47x = 826,009.31 × 826,009.31
4. Step 4: Simplify right side
   545,640.47x = 682,291,384,336.72
5. Step 5: Solve for x
   x = 682,291,384,336.72/545,640.47
6. Step 6: Final answer
   x = 1,250,441.31