Finding the Third Proportional to 126,838.50 and 273,300

Step by Step Solution

1. Step 1: Write the proportion equation
   126,838.50 : 273,300 = 273,300 : x
2. Step 2: Convert to fraction form
   126,838.50/273,300 = 273,300/x
3. Step 3: Cross multiply
   126,838.50x = 273,300 × 273,300
4. Step 4: Simplify right side
   126,838.50x = 74,692,890,000
5. Step 5: Solve for x
   x = 74,692,890,000/126,838.50
6. Step 6: Final answer
   x = 588,881.85