Finding the Third Proportional to 402,598.50 and 877,539

Step by Step Solution

1. Step 1: Write the proportion equation
   402,598.50 : 877,539 = 877,539 : x
2. Step 2: Convert to fraction form
   402,598.50/877,539 = 877,539/x
3. Step 3: Cross multiply
   402,598.50x = 877,539 × 877,539
4. Step 4: Simplify right side
   402,598.50x = 770,074,696,521
5. Step 5: Solve for x
   x = 770,074,696,521/402,598.50
6. Step 6: Final answer
   x = 1,912,760.97