Finding the Third Proportional to 116,057.50 and 253,985

Step by Step Solution

1. Step 1: Write the proportion equation
   116,057.50 : 253,985 = 253,985 : x
2. Step 2: Convert to fraction form
   116,057.50/253,985 = 253,985/x
3. Step 3: Cross multiply
   116,057.50x = 253,985 × 253,985
4. Step 4: Simplify right side
   116,057.50x = 64,508,380,225
5. Step 5: Solve for x
   x = 64,508,380,225/116,057.50
6. Step 6: Final answer
   x = 555,831.21