Finding the Third Proportional to 63,139 and 105,218

Step by Step Solution

1. Step 1: Write the proportion equation
   63,139 : 105,218 = 105,218 : x
2. Step 2: Convert to fraction form
   63,139/105,218 = 105,218/x
3. Step 3: Cross multiply
   63,139x = 105,218 × 105,218
4. Step 4: Simplify right side
   63,139x = 11,070,827,524
5. Step 5: Solve for x
   x = 11,070,827,524/63,139
6. Step 6: Final answer
   x = 175,340.56