Finding the Third Proportional to 191,819.39 and 300,921.33

Step by Step Solution

1. Step 1: Write the proportion equation
   191,819.39 : 300,921.33 = 300,921.33 : x
2. Step 2: Convert to fraction form
   191,819.39/300,921.33 = 300,921.33/x
3. Step 3: Cross multiply
   191,819.39x = 300,921.33 × 300,921.33
4. Step 4: Simplify right side
   191,819.39x = 90,553,645,720.51
5. Step 5: Solve for x
   x = 90,553,645,720.51/191,819.39
6. Step 6: Final answer
   x = 472,077.64