Finding the Third Proportional to 747,872 and 1,621,936

Step by Step Solution

1. Step 1: Write the proportion equation
   747,872 : 1,621,936 = 1,621,936 : x
2. Step 2: Convert to fraction form
   747,872/1,621,936 = 1,621,936/x
3. Step 3: Cross multiply
   747,872x = 1,621,936 × 1,621,936
4. Step 4: Simplify right side
   747,872x = 2,630,676,388,096
5. Step 5: Solve for x
   x = 2,630,676,388,096/747,872
6. Step 6: Final answer
   x = 3,517,548.98