Finding the Third Proportional to 677,436 and 1,487,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,436 : 1,487,716.50 = 1,487,716.50 : x
2. Step 2: Convert to fraction form
   677,436/1,487,716.50 = 1,487,716.50/x
3. Step 3: Cross multiply
   677,436x = 1,487,716.50 × 1,487,716.50
4. Step 4: Simplify right side
   677,436x = 2,213,300,384,372.25
5. Step 5: Solve for x
   x = 2,213,300,384,372.25/677,436
6. Step 6: Final answer
   x = 3,267,172.67