Finding the Third Proportional to 111,214.81 and 262,426.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111,214.81 : 262,426.06 = 262,426.06 : x
2. Step 2: Convert to fraction form
   111,214.81/262,426.06 = 262,426.06/x
3. Step 3: Cross multiply
   111,214.81x = 262,426.06 × 262,426.06
4. Step 4: Simplify right side
   111,214.81x = 68,867,438,279.25
5. Step 5: Solve for x
   x = 68,867,438,279.25/111,214.81
6. Step 6: Final answer
   x = 619,229.01