Finding the Third Proportional to 385,663.50 and 837,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,663.50 : 837,667.50 = 837,667.50 : x
2. Step 2: Convert to fraction form
   385,663.50/837,667.50 = 837,667.50/x
3. Step 3: Cross multiply
   385,663.50x = 837,667.50 × 837,667.50
4. Step 4: Simplify right side
   385,663.50x = 701,686,840,556.25
5. Step 5: Solve for x
   x = 701,686,840,556.25/385,663.50
6. Step 6: Final answer
   x = 1,819,427.66