Finding the Third Proportional to 111,979.13 and 245,801.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,979.13 : 245,801.25 = 245,801.25 : x
2. Step 2: Convert to fraction form
   111,979.13/245,801.25 = 245,801.25/x
3. Step 3: Cross multiply
   111,979.13x = 245,801.25 × 245,801.25
4. Step 4: Simplify right side
   111,979.13x = 60,418,254,501.56
5. Step 5: Solve for x
   x = 60,418,254,501.56/111,979.13
6. Step 6: Final answer
   x = 539,549.26