Finding the Third Proportional to 189,876 and 448,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,876 : 448,221.50 = 448,221.50 : x
2. Step 2: Convert to fraction form
   189,876/448,221.50 = 448,221.50/x
3. Step 3: Cross multiply
   189,876x = 448,221.50 × 448,221.50
4. Step 4: Simplify right side
   189,876x = 200,902,513,062.25
5. Step 5: Solve for x
   x = 200,902,513,062.25/189,876
6. Step 6: Final answer
   x = 1,058,072.18