Finding the Third Proportional to 433,147.50 and 666,636

Step by Step Solution

1. Step 1: Write the proportion equation
   433,147.50 : 666,636 = 666,636 : x
2. Step 2: Convert to fraction form
   433,147.50/666,636 = 666,636/x
3. Step 3: Cross multiply
   433,147.50x = 666,636 × 666,636
4. Step 4: Simplify right side
   433,147.50x = 444,403,556,496
5. Step 5: Solve for x
   x = 444,403,556,496/433,147.50
6. Step 6: Final answer
   x = 1,025,986.66