Finding the Third Proportional to 301,890 and 646,051.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,890 : 646,051.50 = 646,051.50 : x
2. Step 2: Convert to fraction form
   301,890/646,051.50 = 646,051.50/x
3. Step 3: Cross multiply
   301,890x = 646,051.50 × 646,051.50
4. Step 4: Simplify right side
   301,890x = 417,382,540,652.25
5. Step 5: Solve for x
   x = 417,382,540,652.25/301,890
6. Step 6: Final answer
   x = 1,382,564.98