Finding the Third Proportional to 42,919.88 and 102,789

Step by Step Solution

1. Step 1: Write the proportion equation
   42,919.88 : 102,789 = 102,789 : x
2. Step 2: Convert to fraction form
   42,919.88/102,789 = 102,789/x
3. Step 3: Cross multiply
   42,919.88x = 102,789 × 102,789
4. Step 4: Simplify right side
   42,919.88x = 10,565,578,521
5. Step 5: Solve for x
   x = 10,565,578,521/42,919.88
6. Step 6: Final answer
   x = 246,169.83