Finding the Third Proportional to 623,295 and 831,870

Step by Step Solution

1. Step 1: Write the proportion equation
   623,295 : 831,870 = 831,870 : x
2. Step 2: Convert to fraction form
   623,295/831,870 = 831,870/x
3. Step 3: Cross multiply
   623,295x = 831,870 × 831,870
4. Step 4: Simplify right side
   623,295x = 692,007,696,900
5. Step 5: Solve for x
   x = 692,007,696,900/623,295
6. Step 6: Final answer
   x = 1,110,241.05