Finding the Third Proportional to 873,408 and 1,123,488

Step by Step Solution

1. Step 1: Write the proportion equation
   873,408 : 1,123,488 = 1,123,488 : x
2. Step 2: Convert to fraction form
   873,408/1,123,488 = 1,123,488/x
3. Step 3: Cross multiply
   873,408x = 1,123,488 × 1,123,488
4. Step 4: Simplify right side
   873,408x = 1,262,225,286,144
5. Step 5: Solve for x
   x = 1,262,225,286,144/873,408
6. Step 6: Final answer
   x = 1,445,172.57