Finding the Third Proportional to 394,512 and 851,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,512 : 851,972.50 = 851,972.50 : x
2. Step 2: Convert to fraction form
   394,512/851,972.50 = 851,972.50/x
3. Step 3: Cross multiply
   394,512x = 851,972.50 × 851,972.50
4. Step 4: Simplify right side
   394,512x = 725,857,140,756.25
5. Step 5: Solve for x
   x = 725,857,140,756.25/394,512
6. Step 6: Final answer
   x = 1,839,886.09