Finding the Third Proportional to 433,146 and 666,634.50

Step by Step Solution

1. Step 1: Write the proportion equation
   433,146 : 666,634.50 = 666,634.50 : x
2. Step 2: Convert to fraction form
   433,146/666,634.50 = 666,634.50/x
3. Step 3: Cross multiply
   433,146x = 666,634.50 × 666,634.50
4. Step 4: Simplify right side
   433,146x = 444,401,556,590.25
5. Step 5: Solve for x
   x = 444,401,556,590.25/433,146
6. Step 6: Final answer
   x = 1,025,985.60