Finding the Third Proportional to 394,700.50 and 830,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,700.50 : 830,662.50 = 830,662.50 : x
2. Step 2: Convert to fraction form
   394,700.50/830,662.50 = 830,662.50/x
3. Step 3: Cross multiply
   394,700.50x = 830,662.50 × 830,662.50
4. Step 4: Simplify right side
   394,700.50x = 690,000,188,906.25
5. Step 5: Solve for x
   x = 690,000,188,906.25/394,700.50
6. Step 6: Final answer
   x = 1,748,161.43