Finding the Third Proportional to 623,386 and 1,363,412

Step by Step Solution

1. Step 1: Write the proportion equation
   623,386 : 1,363,412 = 1,363,412 : x
2. Step 2: Convert to fraction form
   623,386/1,363,412 = 1,363,412/x
3. Step 3: Cross multiply
   623,386x = 1,363,412 × 1,363,412
4. Step 4: Simplify right side
   623,386x = 1,858,892,281,744
5. Step 5: Solve for x
   x = 1,858,892,281,744/623,386
6. Step 6: Final answer
   x = 2,981,928.18