Finding the Third Proportional to 712,809 and 942,205.50

Step by Step Solution

1. Step 1: Write the proportion equation
   712,809 : 942,205.50 = 942,205.50 : x
2. Step 2: Convert to fraction form
   712,809/942,205.50 = 942,205.50/x
3. Step 3: Cross multiply
   712,809x = 942,205.50 × 942,205.50
4. Step 4: Simplify right side
   712,809x = 887,751,204,230.25
5. Step 5: Solve for x
   x = 887,751,204,230.25/712,809
6. Step 6: Final answer
   x = 1,245,426.48