Finding the Third Proportional to 418,133 and 637,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   418,133 : 637,031.50 = 637,031.50 : x
2. Step 2: Convert to fraction form
   418,133/637,031.50 = 637,031.50/x
3. Step 3: Cross multiply
   418,133x = 637,031.50 × 637,031.50
4. Step 4: Simplify right side
   418,133x = 405,809,131,992.25
5. Step 5: Solve for x
   x = 405,809,131,992.25/418,133
6. Step 6: Final answer
   x = 970,526.44