Finding the Third Proportional to 787,364 and 1,221,512

Step by Step Solution

1. Step 1: Write the proportion equation
   787,364 : 1,221,512 = 1,221,512 : x
2. Step 2: Convert to fraction form
   787,364/1,221,512 = 1,221,512/x
3. Step 3: Cross multiply
   787,364x = 1,221,512 × 1,221,512
4. Step 4: Simplify right side
   787,364x = 1,492,091,566,144
5. Step 5: Solve for x
   x = 1,492,091,566,144/787,364
6. Step 6: Final answer
   x = 1,895,046.72