Finding the Third Proportional to 111,709.13 and 243,491.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111,709.13 : 243,491.06 = 243,491.06 : x
2. Step 2: Convert to fraction form
   111,709.13/243,491.06 = 243,491.06/x
3. Step 3: Cross multiply
   111,709.13x = 243,491.06 × 243,491.06
4. Step 4: Simplify right side
   111,709.13x = 59,287,897,517.38
5. Step 5: Solve for x
   x = 59,287,897,517.38/111,709.13
6. Step 6: Final answer
   x = 530,734.60