Finding the Third Proportional to 721,364 and 1,567,144

Step by Step Solution

1. Step 1: Write the proportion equation
   721,364 : 1,567,144 = 1,567,144 : x
2. Step 2: Convert to fraction form
   721,364/1,567,144 = 1,567,144/x
3. Step 3: Cross multiply
   721,364x = 1,567,144 × 1,567,144
4. Step 4: Simplify right side
   721,364x = 2,455,940,316,736
5. Step 5: Solve for x
   x = 2,455,940,316,736/721,364
6. Step 6: Final answer
   x = 3,404,578.43