Finding the Third Proportional to 806,938 and 1,213,890

Step by Step Solution

1. Step 1: Write the proportion equation
   806,938 : 1,213,890 = 1,213,890 : x
2. Step 2: Convert to fraction form
   806,938/1,213,890 = 1,213,890/x
3. Step 3: Cross multiply
   806,938x = 1,213,890 × 1,213,890
4. Step 4: Simplify right side
   806,938x = 1,473,528,932,100
5. Step 5: Solve for x
   x = 1,473,528,932,100/806,938
6. Step 6: Final answer
   x = 1,826,074.53