Finding the Third Proportional to 111,408 and 242,448

Step by Step Solution

1. Step 1: Write the proportion equation
   111,408 : 242,448 = 242,448 : x
2. Step 2: Convert to fraction form
   111,408/242,448 = 242,448/x
3. Step 3: Cross multiply
   111,408x = 242,448 × 242,448
4. Step 4: Simplify right side
   111,408x = 58,781,032,704
5. Step 5: Solve for x
   x = 58,781,032,704/111,408
6. Step 6: Final answer
   x = 527,619.50