Finding the Third Proportional to 623,428 and 1,363,488

Step by Step Solution

1. Step 1: Write the proportion equation
   623,428 : 1,363,488 = 1,363,488 : x
2. Step 2: Convert to fraction form
   623,428/1,363,488 = 1,363,488/x
3. Step 3: Cross multiply
   623,428x = 1,363,488 × 1,363,488
4. Step 4: Simplify right side
   623,428x = 1,859,099,526,144
5. Step 5: Solve for x
   x = 1,859,099,526,144/623,428
6. Step 6: Final answer
   x = 2,982,059.72