Finding the Third Proportional to 138,154.50 and 247,878

Step by Step Solution

1. Step 1: Write the proportion equation
   138,154.50 : 247,878 = 247,878 : x
2. Step 2: Convert to fraction form
   138,154.50/247,878 = 247,878/x
3. Step 3: Cross multiply
   138,154.50x = 247,878 × 247,878
4. Step 4: Simplify right side
   138,154.50x = 61,443,502,884
5. Step 5: Solve for x
   x = 61,443,502,884/138,154.50
6. Step 6: Final answer
   x = 444,744.85