Finding the Third Proportional to 121,959 and 194,231.25

Step by Step Solution

1. Step 1: Write the proportion equation
   121,959 : 194,231.25 = 194,231.25 : x
2. Step 2: Convert to fraction form
   121,959/194,231.25 = 194,231.25/x
3. Step 3: Cross multiply
   121,959x = 194,231.25 × 194,231.25
4. Step 4: Simplify right side
   121,959x = 37,725,778,476.56
5. Step 5: Solve for x
   x = 37,725,778,476.56/121,959
6. Step 6: Final answer
   x = 309,331.65