Finding the Third Proportional to 102,939 and 149,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,939 : 149,717.50 = 149,717.50 : x
2. Step 2: Convert to fraction form
   102,939/149,717.50 = 149,717.50/x
3. Step 3: Cross multiply
   102,939x = 149,717.50 × 149,717.50
4. Step 4: Simplify right side
   102,939x = 22,415,329,806.25
5. Step 5: Solve for x
   x = 22,415,329,806.25/102,939
6. Step 6: Final answer
   x = 217,753.52