Finding the Third Proportional to 853,692 and 1,278,300

Step by Step Solution

1. Step 1: Write the proportion equation
   853,692 : 1,278,300 = 1,278,300 : x
2. Step 2: Convert to fraction form
   853,692/1,278,300 = 1,278,300/x
3. Step 3: Cross multiply
   853,692x = 1,278,300 × 1,278,300
4. Step 4: Simplify right side
   853,692x = 1,634,050,890,000
5. Step 5: Solve for x
   x = 1,634,050,890,000/853,692
6. Step 6: Final answer
   x = 1,914,098.87