Finding the Third Proportional to 866,290.50 and 2,086,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   866,290.50 : 2,086,996.50 = 2,086,996.50 : x
2. Step 2: Convert to fraction form
   866,290.50/2,086,996.50 = 2,086,996.50/x
3. Step 3: Cross multiply
   866,290.50x = 2,086,996.50 × 2,086,996.50
4. Step 4: Simplify right side
   866,290.50x = 4,355,554,391,012.25
5. Step 5: Solve for x
   x = 4,355,554,391,012.25/866,290.50
6. Step 6: Final answer
   x = 5,027,821.95