Finding the Third Proportional to 381,472.50 and 828,492

Step by Step Solution

1. Step 1: Write the proportion equation
   381,472.50 : 828,492 = 828,492 : x
2. Step 2: Convert to fraction form
   381,472.50/828,492 = 828,492/x
3. Step 3: Cross multiply
   381,472.50x = 828,492 × 828,492
4. Step 4: Simplify right side
   381,472.50x = 686,398,994,064
5. Step 5: Solve for x
   x = 686,398,994,064/381,472.50
6. Step 6: Final answer
   x = 1,799,340.70