Finding the Third Proportional to 681,870 and 1,022,805.50

Step by Step Solution

1. Step 1: Write the proportion equation
   681,870 : 1,022,805.50 = 1,022,805.50 : x
2. Step 2: Convert to fraction form
   681,870/1,022,805.50 = 1,022,805.50/x
3. Step 3: Cross multiply
   681,870x = 1,022,805.50 × 1,022,805.50
4. Step 4: Simplify right side
   681,870x = 1,046,131,090,830.25
5. Step 5: Solve for x
   x = 1,046,131,090,830.25/681,870
6. Step 6: Final answer
   x = 1,534,209.00