Finding the Third Proportional to 402,480.50 and 830,477

Step by Step Solution

1. Step 1: Write the proportion equation
   402,480.50 : 830,477 = 830,477 : x
2. Step 2: Convert to fraction form
   402,480.50/830,477 = 830,477/x
3. Step 3: Cross multiply
   402,480.50x = 830,477 × 830,477
4. Step 4: Simplify right side
   402,480.50x = 689,692,047,529
5. Step 5: Solve for x
   x = 689,692,047,529/402,480.50
6. Step 6: Final answer
   x = 1,713,603.63