Finding the Third Proportional to 113,890.50 and 272,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,890.50 : 272,011.50 = 272,011.50 : x
2. Step 2: Convert to fraction form
   113,890.50/272,011.50 = 272,011.50/x
3. Step 3: Cross multiply
   113,890.50x = 272,011.50 × 272,011.50
4. Step 4: Simplify right side
   113,890.50x = 73,990,256,132.25
5. Step 5: Solve for x
   x = 73,990,256,132.25/113,890.50
6. Step 6: Final answer
   x = 649,661.35