Finding the Third Proportional to 108,916 and 237,209.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,916 : 237,209.50 = 237,209.50 : x
2. Step 2: Convert to fraction form
   108,916/237,209.50 = 237,209.50/x
3. Step 3: Cross multiply
   108,916x = 237,209.50 × 237,209.50
4. Step 4: Simplify right side
   108,916x = 56,268,346,890.25
5. Step 5: Solve for x
   x = 56,268,346,890.25/108,916
6. Step 6: Final answer
   x = 516,621.50