Finding the Third Proportional to 831,606 and 1,287,153

Step by Step Solution

1. Step 1: Write the proportion equation
   831,606 : 1,287,153 = 1,287,153 : x
2. Step 2: Convert to fraction form
   831,606/1,287,153 = 1,287,153/x
3. Step 3: Cross multiply
   831,606x = 1,287,153 × 1,287,153
4. Step 4: Simplify right side
   831,606x = 1,656,762,845,409
5. Step 5: Solve for x
   x = 1,656,762,845,409/831,606
6. Step 6: Final answer
   x = 1,992,244.94