Finding the Third Proportional to 607,728 and 1,329,872

Step by Step Solution

1. Step 1: Write the proportion equation
   607,728 : 1,329,872 = 1,329,872 : x
2. Step 2: Convert to fraction form
   607,728/1,329,872 = 1,329,872/x
3. Step 3: Cross multiply
   607,728x = 1,329,872 × 1,329,872
4. Step 4: Simplify right side
   607,728x = 1,768,559,536,384
5. Step 5: Solve for x
   x = 1,768,559,536,384/607,728
6. Step 6: Final answer
   x = 2,910,116.92