Finding the Third Proportional to 389,699.50 and 837,415

Step by Step Solution

1. Step 1: Write the proportion equation
   389,699.50 : 837,415 = 837,415 : x
2. Step 2: Convert to fraction form
   389,699.50/837,415 = 837,415/x
3. Step 3: Cross multiply
   389,699.50x = 837,415 × 837,415
4. Step 4: Simplify right side
   389,699.50x = 701,263,882,225
5. Step 5: Solve for x
   x = 701,263,882,225/389,699.50
6. Step 6: Final answer
   x = 1,799,499.06