Finding the Third Proportional to 308,875.50 and 676,800

Step by Step Solution

1. Step 1: Write the proportion equation
   308,875.50 : 676,800 = 676,800 : x
2. Step 2: Convert to fraction form
   308,875.50/676,800 = 676,800/x
3. Step 3: Cross multiply
   308,875.50x = 676,800 × 676,800
4. Step 4: Simplify right side
   308,875.50x = 458,058,240,000
5. Step 5: Solve for x
   x = 458,058,240,000/308,875.50
6. Step 6: Final answer
   x = 1,482,986.64