Finding the Third Proportional to 623,496 and 939,456

Step by Step Solution

1. Step 1: Write the proportion equation
   623,496 : 939,456 = 939,456 : x
2. Step 2: Convert to fraction form
   623,496/939,456 = 939,456/x
3. Step 3: Cross multiply
   623,496x = 939,456 × 939,456
4. Step 4: Simplify right side
   623,496x = 882,577,575,936
5. Step 5: Solve for x
   x = 882,577,575,936/623,496
6. Step 6: Final answer
   x = 1,415,530.45