Finding the Third Proportional to 308,845.50 and 666,897

Step by Step Solution

1. Step 1: Write the proportion equation
   308,845.50 : 666,897 = 666,897 : x
2. Step 2: Convert to fraction form
   308,845.50/666,897 = 666,897/x
3. Step 3: Cross multiply
   308,845.50x = 666,897 × 666,897
4. Step 4: Simplify right side
   308,845.50x = 444,751,608,609
5. Step 5: Solve for x
   x = 444,751,608,609/308,845.50
6. Step 6: Final answer
   x = 1,440,045.62