Finding the Third Proportional to 816,126.75 and 1,267,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   816,126.75 : 1,267,978.50 = 1,267,978.50 : x
2. Step 2: Convert to fraction form
   816,126.75/1,267,978.50 = 1,267,978.50/x
3. Step 3: Cross multiply
   816,126.75x = 1,267,978.50 × 1,267,978.50
4. Step 4: Simplify right side
   816,126.75x = 1,607,769,476,462.25
5. Step 5: Solve for x
   x = 1,607,769,476,462.25/816,126.75
6. Step 6: Final answer
   x = 1,969,999.73