Finding the Third Proportional to 402,799.50 and 877,500

Step by Step Solution

1. Step 1: Write the proportion equation
   402,799.50 : 877,500 = 877,500 : x
2. Step 2: Convert to fraction form
   402,799.50/877,500 = 877,500/x
3. Step 3: Cross multiply
   402,799.50x = 877,500 × 877,500
4. Step 4: Simplify right side
   402,799.50x = 770,006,250,000
5. Step 5: Solve for x
   x = 770,006,250,000/402,799.50
6. Step 6: Final answer
   x = 1,911,636.56