Finding the Third Proportional to 111,499 and 237,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,499 : 237,406.50 = 237,406.50 : x
2. Step 2: Convert to fraction form
   111,499/237,406.50 = 237,406.50/x
3. Step 3: Cross multiply
   111,499x = 237,406.50 × 237,406.50
4. Step 4: Simplify right side
   111,499x = 56,361,846,242.25
5. Step 5: Solve for x
   x = 56,361,846,242.25/111,499
6. Step 6: Final answer
   x = 505,491.94