Finding the Third Proportional to 319,798 and 683,300

Step by Step Solution

1. Step 1: Write the proportion equation
   319,798 : 683,300 = 683,300 : x
2. Step 2: Convert to fraction form
   319,798/683,300 = 683,300/x
3. Step 3: Cross multiply
   319,798x = 683,300 × 683,300
4. Step 4: Simplify right side
   319,798x = 466,898,890,000
5. Step 5: Solve for x
   x = 466,898,890,000/319,798
6. Step 6: Final answer
   x = 1,459,980.64