Finding the Third Proportional to 49,721 and 69,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,721 : 69,517.50 = 69,517.50 : x
2. Step 2: Convert to fraction form
   49,721/69,517.50 = 69,517.50/x
3. Step 3: Cross multiply
   49,721x = 69,517.50 × 69,517.50
4. Step 4: Simplify right side
   49,721x = 4,832,682,806.25
5. Step 5: Solve for x
   x = 4,832,682,806.25/49,721
6. Step 6: Final answer
   x = 97,196.01