Finding the Third Proportional to 389,854.50 and 846,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,854.50 : 846,412.50 = 846,412.50 : x
2. Step 2: Convert to fraction form
   389,854.50/846,412.50 = 846,412.50/x
3. Step 3: Cross multiply
   389,854.50x = 846,412.50 × 846,412.50
4. Step 4: Simplify right side
   389,854.50x = 716,414,120,156.25
5. Step 5: Solve for x
   x = 716,414,120,156.25/389,854.50
6. Step 6: Final answer
   x = 1,837,644.87