Finding the Third Proportional to 664,540 and 1,416,072

Step by Step Solution

1. Step 1: Write the proportion equation
   664,540 : 1,416,072 = 1,416,072 : x
2. Step 2: Convert to fraction form
   664,540/1,416,072 = 1,416,072/x
3. Step 3: Cross multiply
   664,540x = 1,416,072 × 1,416,072
4. Step 4: Simplify right side
   664,540x = 2,005,259,909,184
5. Step 5: Solve for x
   x = 2,005,259,909,184/664,540
6. Step 6: Final answer
   x = 3,017,515.74