Finding the Third Proportional to 316,294.50 and 697,380

Step by Step Solution

1. Step 1: Write the proportion equation
   316,294.50 : 697,380 = 697,380 : x
2. Step 2: Convert to fraction form
   316,294.50/697,380 = 697,380/x
3. Step 3: Cross multiply
   316,294.50x = 697,380 × 697,380
4. Step 4: Simplify right side
   316,294.50x = 486,338,864,400
5. Step 5: Solve for x
   x = 486,338,864,400/316,294.50
6. Step 6: Final answer
   x = 1,537,614.04