Finding the Third Proportional to 311,725.50 and 676,587

Step by Step Solution

1. Step 1: Write the proportion equation
   311,725.50 : 676,587 = 676,587 : x
2. Step 2: Convert to fraction form
   311,725.50/676,587 = 676,587/x
3. Step 3: Cross multiply
   311,725.50x = 676,587 × 676,587
4. Step 4: Simplify right side
   311,725.50x = 457,769,968,569
5. Step 5: Solve for x
   x = 457,769,968,569/311,725.50
6. Step 6: Final answer
   x = 1,468,503.44