Finding the Third Proportional to 402,156 and 837,388

Step by Step Solution

1. Step 1: Write the proportion equation
   402,156 : 837,388 = 837,388 : x
2. Step 2: Convert to fraction form
   402,156/837,388 = 837,388/x
3. Step 3: Cross multiply
   402,156x = 837,388 × 837,388
4. Step 4: Simplify right side
   402,156x = 701,218,662,544
5. Step 5: Solve for x
   x = 701,218,662,544/402,156
6. Step 6: Final answer
   x = 1,743,648.39