Finding the Third Proportional to 483,808.50 and 676,688

Step by Step Solution

1. Step 1: Write the proportion equation
   483,808.50 : 676,688 = 676,688 : x
2. Step 2: Convert to fraction form
   483,808.50/676,688 = 676,688/x
3. Step 3: Cross multiply
   483,808.50x = 676,688 × 676,688
4. Step 4: Simplify right side
   483,808.50x = 457,906,649,344
5. Step 5: Solve for x
   x = 457,906,649,344/483,808.50
6. Step 6: Final answer
   x = 946,462.60