Finding the Third Proportional to 811,840 and 1,261,946

Step by Step Solution

1. Step 1: Write the proportion equation
   811,840 : 1,261,946 = 1,261,946 : x
2. Step 2: Convert to fraction form
   811,840/1,261,946 = 1,261,946/x
3. Step 3: Cross multiply
   811,840x = 1,261,946 × 1,261,946
4. Step 4: Simplify right side
   811,840x = 1,592,507,706,916
5. Step 5: Solve for x
   x = 1,592,507,706,916/811,840
6. Step 6: Final answer
   x = 1,961,602.91