Finding the Third Proportional to 664,604 and 1,004,840

Step by Step Solution

1. Step 1: Write the proportion equation
   664,604 : 1,004,840 = 1,004,840 : x
2. Step 2: Convert to fraction form
   664,604/1,004,840 = 1,004,840/x
3. Step 3: Cross multiply
   664,604x = 1,004,840 × 1,004,840
4. Step 4: Simplify right side
   664,604x = 1,009,703,425,600
5. Step 5: Solve for x
   x = 1,009,703,425,600/664,604
6. Step 6: Final answer
   x = 1,519,255.72