Finding the Third Proportional to 387,612 and 834,584

Step by Step Solution

1. Step 1: Write the proportion equation
   387,612 : 834,584 = 834,584 : x
2. Step 2: Convert to fraction form
   387,612/834,584 = 834,584/x
3. Step 3: Cross multiply
   387,612x = 834,584 × 834,584
4. Step 4: Simplify right side
   387,612x = 696,530,453,056
5. Step 5: Solve for x
   x = 696,530,453,056/387,612
6. Step 6: Final answer
   x = 1,796,978.56