Finding the Third Proportional to 49,905.75 and 102,139.88

Step by Step Solution

1. Step 1: Write the proportion equation
   49,905.75 : 102,139.88 = 102,139.88 : x
2. Step 2: Convert to fraction form
   49,905.75/102,139.88 = 102,139.88/x
3. Step 3: Cross multiply
   49,905.75x = 102,139.88 × 102,139.88
4. Step 4: Simplify right side
   49,905.75x = 10,432,554,065.02
5. Step 5: Solve for x
   x = 10,432,554,065.02/49,905.75
6. Step 6: Final answer
   x = 209,045.13