Finding the Third Proportional to 664,912 and 1,425,080

Step by Step Solution

1. Step 1: Write the proportion equation
   664,912 : 1,425,080 = 1,425,080 : x
2. Step 2: Convert to fraction form
   664,912/1,425,080 = 1,425,080/x
3. Step 3: Cross multiply
   664,912x = 1,425,080 × 1,425,080
4. Step 4: Simplify right side
   664,912x = 2,030,853,006,400
5. Step 5: Solve for x
   x = 2,030,853,006,400/664,912
6. Step 6: Final answer
   x = 3,054,318.48