Finding the Third Proportional to 753,624 and 1,638,144

Step by Step Solution

1. Step 1: Write the proportion equation
   753,624 : 1,638,144 = 1,638,144 : x
2. Step 2: Convert to fraction form
   753,624/1,638,144 = 1,638,144/x
3. Step 3: Cross multiply
   753,624x = 1,638,144 × 1,638,144
4. Step 4: Simplify right side
   753,624x = 2,683,515,764,736
5. Step 5: Solve for x
   x = 2,683,515,764,736/753,624
6. Step 6: Final answer
   x = 3,560,815.16