Finding the Third Proportional to 847,185.75 and 1,290,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   847,185.75 : 1,290,631.50 = 1,290,631.50 : x
2. Step 2: Convert to fraction form
   847,185.75/1,290,631.50 = 1,290,631.50/x
3. Step 3: Cross multiply
   847,185.75x = 1,290,631.50 × 1,290,631.50
4. Step 4: Simplify right side
   847,185.75x = 1,665,729,668,792.25
5. Step 5: Solve for x
   x = 1,665,729,668,792.25/847,185.75
6. Step 6: Final answer
   x = 1,966,191.79