Finding the Third Proportional to 400,939.59 and 830,298.94

Step by Step Solution

1. Step 1: Write the proportion equation
   400,939.59 : 830,298.94 = 830,298.94 : x
2. Step 2: Convert to fraction form
   400,939.59/830,298.94 = 830,298.94/x
3. Step 3: Cross multiply
   400,939.59x = 830,298.94 × 830,298.94
4. Step 4: Simplify right side
   400,939.59x = 689,396,325,613.63
5. Step 5: Solve for x
   x = 689,396,325,613.63/400,939.59
6. Step 6: Final answer
   x = 1,719,451.85