Finding the Third Proportional to 402,800.50 and 877,502

Step by Step Solution

1. Step 1: Write the proportion equation
   402,800.50 : 877,502 = 877,502 : x
2. Step 2: Convert to fraction form
   402,800.50/877,502 = 877,502/x
3. Step 3: Cross multiply
   402,800.50x = 877,502 × 877,502
4. Step 4: Simplify right side
   402,800.50x = 770,009,760,004
5. Step 5: Solve for x
   x = 770,009,760,004/402,800.50
6. Step 6: Final answer
   x = 1,911,640.53