Finding the Third Proportional to 120,472.31 and 262,387.69

Step by Step Solution

1. Step 1: Write the proportion equation
   120,472.31 : 262,387.69 = 262,387.69 : x
2. Step 2: Convert to fraction form
   120,472.31/262,387.69 = 262,387.69/x
3. Step 3: Cross multiply
   120,472.31x = 262,387.69 × 262,387.69
4. Step 4: Simplify right side
   120,472.31x = 68,847,298,551.60
5. Step 5: Solve for x
   x = 68,847,298,551.60/120,472.31
6. Step 6: Final answer
   x = 571,478.19