Finding the Third Proportional to 215,338.50 and 441,423

Step by Step Solution

1. Step 1: Write the proportion equation
   215,338.50 : 441,423 = 441,423 : x
2. Step 2: Convert to fraction form
   215,338.50/441,423 = 441,423/x
3. Step 3: Cross multiply
   215,338.50x = 441,423 × 441,423
4. Step 4: Simplify right side
   215,338.50x = 194,854,264,929
5. Step 5: Solve for x
   x = 194,854,264,929/215,338.50
6. Step 6: Final answer
   x = 904,874.26