Finding the Third Proportional to 400,650 and 619,536

Step by Step Solution

1. Step 1: Write the proportion equation
   400,650 : 619,536 = 619,536 : x
2. Step 2: Convert to fraction form
   400,650/619,536 = 619,536/x
3. Step 3: Cross multiply
   400,650x = 619,536 × 619,536
4. Step 4: Simplify right side
   400,650x = 383,824,855,296
5. Step 5: Solve for x
   x = 383,824,855,296/400,650
6. Step 6: Final answer
   x = 958,005.38