Finding the Third Proportional to 121,645.50 and 193,710

Step by Step Solution

1. Step 1: Write the proportion equation
   121,645.50 : 193,710 = 193,710 : x
2. Step 2: Convert to fraction form
   121,645.50/193,710 = 193,710/x
3. Step 3: Cross multiply
   121,645.50x = 193,710 × 193,710
4. Step 4: Simplify right side
   121,645.50x = 37,523,564,100
5. Step 5: Solve for x
   x = 37,523,564,100/121,645.50
6. Step 6: Final answer
   x = 308,466.52