Finding the Third Proportional to 538,938 and 845,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,938 : 845,434.50 = 845,434.50 : x
2. Step 2: Convert to fraction form
   538,938/845,434.50 = 845,434.50/x
3. Step 3: Cross multiply
   538,938x = 845,434.50 × 845,434.50
4. Step 4: Simplify right side
   538,938x = 714,759,493,790.25
5. Step 5: Solve for x
   x = 714,759,493,790.25/538,938
6. Step 6: Final answer
   x = 1,326,236.96