Finding the Third Proportional to 309,862.50 and 476,436

Step by Step Solution

1. Step 1: Write the proportion equation
   309,862.50 : 476,436 = 476,436 : x
2. Step 2: Convert to fraction form
   309,862.50/476,436 = 476,436/x
3. Step 3: Cross multiply
   309,862.50x = 476,436 × 476,436
4. Step 4: Simplify right side
   309,862.50x = 226,991,262,096
5. Step 5: Solve for x
   x = 226,991,262,096/309,862.50
6. Step 6: Final answer
   x = 732,554.80