Finding the Third Proportional to 538,918.31 and 845,404.59

Step by Step Solution

1. Step 1: Write the proportion equation
   538,918.31 : 845,404.59 = 845,404.59 : x
2. Step 2: Convert to fraction form
   538,918.31/845,404.59 = 845,404.59/x
3. Step 3: Cross multiply
   538,918.31x = 845,404.59 × 845,404.59
4. Step 4: Simplify right side
   538,918.31x = 714,708,927,133.60
5. Step 5: Solve for x
   x = 714,708,927,133.60/538,918.31
6. Step 6: Final answer
   x = 1,326,191.58