Finding the Third Proportional to 111,899.81 and 228,969.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,899.81 : 228,969.56 = 228,969.56 : x
2. Step 2: Convert to fraction form
   111,899.81/228,969.56 = 228,969.56/x
3. Step 3: Cross multiply
   111,899.81x = 228,969.56 × 228,969.56
4. Step 4: Simplify right side
   111,899.81x = 52,427,060,551.44
5. Step 5: Solve for x
   x = 52,427,060,551.44/111,899.81
6. Step 6: Final answer
   x = 468,517.86