Finding the Third Proportional to 787,698.50 and 1,687,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   787,698.50 : 1,687,480.50 = 1,687,480.50 : x
2. Step 2: Convert to fraction form
   787,698.50/1,687,480.50 = 1,687,480.50/x
3. Step 3: Cross multiply
   787,698.50x = 1,687,480.50 × 1,687,480.50
4. Step 4: Simplify right side
   787,698.50x = 2,847,590,437,880.25
5. Step 5: Solve for x
   x = 2,847,590,437,880.25/787,698.50
6. Step 6: Final answer
   x = 3,615,076.63