Finding the Third Proportional to 111,403.13 and 231,985.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,403.13 : 231,985.50 = 231,985.50 : x
2. Step 2: Convert to fraction form
   111,403.13/231,985.50 = 231,985.50/x
3. Step 3: Cross multiply
   111,403.13x = 231,985.50 × 231,985.50
4. Step 4: Simplify right side
   111,403.13x = 53,817,272,210.25
5. Step 5: Solve for x
   x = 53,817,272,210.25/111,403.13
6. Step 6: Final answer
   x = 483,085.84