Finding the Third Proportional to 789,939 and 1,128,829.50

Step by Step Solution

1. Step 1: Write the proportion equation
   789,939 : 1,128,829.50 = 1,128,829.50 : x
2. Step 2: Convert to fraction form
   789,939/1,128,829.50 = 1,128,829.50/x
3. Step 3: Cross multiply
   789,939x = 1,128,829.50 × 1,128,829.50
4. Step 4: Simplify right side
   789,939x = 1,274,256,040,070.25
5. Step 5: Solve for x
   x = 1,274,256,040,070.25/789,939
6. Step 6: Final answer
   x = 1,613,106.89