Finding the Third Proportional to 387,123 and 835,476

Step by Step Solution

1. Step 1: Write the proportion equation
   387,123 : 835,476 = 835,476 : x
2. Step 2: Convert to fraction form
   387,123/835,476 = 835,476/x
3. Step 3: Cross multiply
   387,123x = 835,476 × 835,476
4. Step 4: Simplify right side
   387,123x = 698,020,146,576
5. Step 5: Solve for x
   x = 698,020,146,576/387,123
6. Step 6: Final answer
   x = 1,803,096.55