Finding the Third Proportional to 58,861.50 and 127,200

Step by Step Solution

1. Step 1: Write the proportion equation
   58,861.50 : 127,200 = 127,200 : x
2. Step 2: Convert to fraction form
   58,861.50/127,200 = 127,200/x
3. Step 3: Cross multiply
   58,861.50x = 127,200 × 127,200
4. Step 4: Simplify right side
   58,861.50x = 16,179,840,000
5. Step 5: Solve for x
   x = 16,179,840,000/58,861.50
6. Step 6: Final answer
   x = 274,879.85