Finding the Third Proportional to 639,652 and 1,480,978

Step by Step Solution

1. Step 1: Write the proportion equation
   639,652 : 1,480,978 = 1,480,978 : x
2. Step 2: Convert to fraction form
   639,652/1,480,978 = 1,480,978/x
3. Step 3: Cross multiply
   639,652x = 1,480,978 × 1,480,978
4. Step 4: Simplify right side
   639,652x = 2,193,295,836,484
5. Step 5: Solve for x
   x = 2,193,295,836,484/639,652
6. Step 6: Final answer
   x = 3,428,889.20