Finding the Third Proportional to 580,784 and 1,245,642

Step by Step Solution

1. Step 1: Write the proportion equation
   580,784 : 1,245,642 = 1,245,642 : x
2. Step 2: Convert to fraction form
   580,784/1,245,642 = 1,245,642/x
3. Step 3: Cross multiply
   580,784x = 1,245,642 × 1,245,642
4. Step 4: Simplify right side
   580,784x = 1,551,623,992,164
5. Step 5: Solve for x
   x = 1,551,623,992,164/580,784
6. Step 6: Final answer
   x = 2,671,602.51