Finding the Third Proportional to 385,172 and 837,928

Step by Step Solution

1. Step 1: Write the proportion equation
   385,172 : 837,928 = 837,928 : x
2. Step 2: Convert to fraction form
   385,172/837,928 = 837,928/x
3. Step 3: Cross multiply
   385,172x = 837,928 × 837,928
4. Step 4: Simplify right side
   385,172x = 702,123,333,184
5. Step 5: Solve for x
   x = 702,123,333,184/385,172
6. Step 6: Final answer
   x = 1,822,882.59