Finding the Third Proportional to 623,388 and 1,363,416

Step by Step Solution

1. Step 1: Write the proportion equation
   623,388 : 1,363,416 = 1,363,416 : x
2. Step 2: Convert to fraction form
   623,388/1,363,416 = 1,363,416/x
3. Step 3: Cross multiply
   623,388x = 1,363,416 × 1,363,416
4. Step 4: Simplify right side
   623,388x = 1,858,903,189,056
5. Step 5: Solve for x
   x = 1,858,903,189,056/623,388
6. Step 6: Final answer
   x = 2,981,936.11