Finding the Third Proportional to 400,738.50 and 619,713

Step by Step Solution

1. Step 1: Write the proportion equation
   400,738.50 : 619,713 = 619,713 : x
2. Step 2: Convert to fraction form
   400,738.50/619,713 = 619,713/x
3. Step 3: Cross multiply
   400,738.50x = 619,713 × 619,713
4. Step 4: Simplify right side
   400,738.50x = 384,044,202,369
5. Step 5: Solve for x
   x = 384,044,202,369/400,738.50
6. Step 6: Final answer
   x = 958,341.17